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Location:
Rocklea qld
Registered:
February 2003
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ATTN: megasquirt users
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Mon, 13 December 2004 09:25
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As most people probably know im using megasquirt ecu on my car. Ive wired the system up and the car started but only runs for about 3 seconds then dies. The fuel maps im using are from RA40CELICA 's car which has 9.7-1 bottum end so im not sure if im getting to much fuel which floods it and makes it not wanna start again. How do i determine exactly how many squirts and how much fuel per squirt to give it?
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Location:
Hobart
Registered:
June 2002
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Re: ATTN: megasquirt users
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Mon, 13 December 2004 10:05
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yeah don't rely on my map, anyway i think that one was pretty dodgy it was really lean in cruise areas to save fuel, trying to see what economy i could get without killing my power and responiveness.
Are you running standard injectors??? (mine are 210cc)
That said it should idle without problem. From memory your req_fuel should be 8ms if you run 4 squirt/cycle (which i found to be the best comprimise) and alternating. The VE values around the idle should be about 45% i think. This all works out to about a 3ms pulsewidth.
i would send you my configuration but ive since moved to 12x12 map and beta software for the megasquirt.
your problem sounds like afterstart enrichment. It could also be running off the cranking pulse. But 3 seconds sounds a bit long for that, most likely after start enrich.
please READ the megamanual (specifically the tuning section). It explains how to choose number of squirt etc. A little bit of reading always pays off in the end.
It also goes through a step by step tuning section.
it is all explained very clearly.
But to give you starting values:
Required Fuel: 16ms (worked out from engine cc's, injector flow, etc)
PWM current limit: 70%
PWM Time threshold: 1.0ms
Injection per cycle: 4 (2 works aswell)
Injector staging: Alternating
The other constants should be fairly obvious
I have cold cranking flat out at 25ms, warm cranking at 4ms.
AFterstart enrich at 35% for 250 cycles
Make sure your VE table is around 45% around the idle area (1000rpm, 40-50kpa).
That should make it idle, remember these are just starting values. DOnt expect it to work perfect. The megamanual gives you a systematic process for working these out. Ie, what causes which symtoms. www.megasquirt.info is your friend.
cheers
CHris
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Mon, 13 December 2004 10:37
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Ive now found that hooking the ecu to my computer i cannot get it to load any of the settings so i cannot change anything at the momment...I had it running for a few seconds again tonight but still its not right. I will read the manual asap and see how i go but its so close i can feel it now. just cannot get it to go properly. Im also only running standrads injecters atm but i dont know if there sieze etc and working correctly.
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Location:
Montrose, VIC
Registered:
May 2002
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Re: ATTN: megasquirt users
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Mon, 13 December 2004 12:04
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You haven't somehow connected it so that the ignition, ECU, or something else is getting power from the same place as your fuel pump, and that your pump isn't getting an ignition signal so switches off after the prime period??
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Mon, 13 December 2004 12:10
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the ecu runs through a wiring harness to a custom made relay box which houses the fuses and relays for everything. from there it is spilt to where ever it needs to go. so basically battery and ignition come from outside into that and then the power is distributed from there.. make sense???
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Location:
On your mum!
Registered:
May 2002
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Re: ATTN: megasquirt users
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Mon, 13 December 2004 12:54
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Sounds to me like it is starting on the cold start injector - have you spliced into the factory wiring harness? The CSI is hooked into a time switch and temp switch on the factory set up.
From there it may simply be something like the ECU or the injectors are not getting the power when needed.
Standard injectors not pulsing because they are stuck from a lack of use?
I would be inclined to a) disconnect the wire to the CSI (if any) then try to start it - see if you get the 3 second run then.
b) stetho-screwdriver-scope the injectors while giving them some voltage (hook 4 x 1.5V batteries together and make a test plug for the injectors) and see if you can get a "tick tick" from them.
OR - feel free to ignore everything that I have written because I have never used or even seen a mega squirt.
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Location:
Brisbane
Registered:
February 2003
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Re: ATTN: megasquirt users
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Mon, 13 December 2004 13:16
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MS doesn't use the CSI - it just adjusts the fueling to suit air/coolant temps and can drive a solenoid to open/up the air flow...
but your points/suggestions are useful/
i think we've got a number of issues to deal with:
-false triggering from tacho signal - it might be easier to source tacho signal directly from the (-) on the coil? UNLESS if someone could advise if the output of a stock toyota ignitor to the coil isn't 12V?
-fueling is probably lean at startup - and the suggested process of setting up the MS means you start rich and work backwards
-unknown fuel pressure & injector cleanness - is it actually flooding the engine? are they actually opening?
for now, i'd work on one issue at a time - the fuel pump, then the fuel pressure, then the injectors (see test noted by YelloRolla) and then trying to get an idle.
Once it idles, then move on to 'unloaded' revs.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: ATTN: megasquirt users
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Mon, 13 December 2004 15:43
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and to add to that, DATALOG EVERYTHING!!!!!!!!!!!!!!!
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Ive now found that hooking the ecu to my computer i cannot get it to load any of the settings so i cannot change anything at the momment...
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so you still see the real time info and can still datalog? or you have comms issues? that needs to be sorted...
can you hear fuel pump turning on? does it turn off after a few seconds? you could be running off residual fuel pressure, and pump is not being kept on by MS...
Cya, Stewart
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Location:
Hobart
Registered:
June 2002
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Re: ATTN: megasquirt users
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Mon, 13 December 2004 23:23
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sounds like you need to sort out your computer issues.
like stewart said make sure the fuel pump is coming on, and staying on for 2 seconds after she dies.
about tacho triggering, have you seen stewarts thread on here. have a read of that for some ideas.
will start straight after it dies?... if so probably lean not rich and you can richen it up little by little hopefully getting it to idle longer each time.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Tue, 14 December 2004 08:05
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Ok
the megasquirt is not actually turning my fuel pump on at all...But i think its just something easy in the relay box so no big deal at this stage as i just have it hooked to ignition power so when i turn key on it comes on.
Ive also got the tacho pulse coming directly from the coil i think but will double check that. which is better coil or ignitor or sdhould i just get a bosch ignitor straight up now.
Ive realise now that in order to get the data from my ecu to my computer the ecu also needs 12v( i just had my ecu upstairs trying so i could see what its set at) so will hook it up properly tonight.
After it dies it is taking a bit of gettings going again. When i first try it will fire basically straight away but after that its all trouble but i couldnt tell anything due to my computer hooked to it.
Im about to read on the tach testing gear now and ill see if that gives me any clues as to what it is.
Ive got a fuel pressure gauge also so ill hook that up to check fueling. whats a good pressure it should be at. Ill also see if i can get ahold of some other injecters as mine have sat for over a year at my house and i donot know about before i got the setup.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: ATTN: megasquirt users
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Tue, 14 December 2004 08:24
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read the manual 
you need 12V and ground for the ECU to work at all, and it helps to have sensor connected..
have you run it on a stim yet?
you wil want to have MS control the pump later, so don't forget to swap over... it's a safety thing....
techincally ignitor is better, but as you'll see from my graphs, a dave cap (0.22uF, 630V) and a 15Kohm resistor between coil and MS tach input works very well.
if you are running straight from coil, i'd recommend a 10K or 20K ohm resistor (or maybe a 50Kohm pot to start) just to make sure you are not getting noise.
umm is PWM disabed during cranking? what MS code are you running?
fuel pressure should be something like 40psi over manifold pressure (so could be as low as 30Psi at idle).
Cya, Stewart
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Tue, 14 December 2004 08:39
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Ive had a look at your graphs but all the technical words i just dont understand
for more info on the codes of the ms you would need to talk to charles and he is the one who built it. I just wired it up
It has been on a sim already a couple of times and he has said that its alright
We did try a few months ago to get the efi working but i had issues with the engine so since then engine has been rebuilt and ran on carbies and now doing the efi again. When we tried last time the MS was controling the fuel pump properly and the only difference now is the new relay box so thats why i figured its nothing major.
Ill have a look where my tach signal comes from and will hook it to the ignitor. I dont understand much about resisters hence the reason i have charles helping me with it.
What is the PWM that should be disconnected???
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: ATTN: megasquirt users
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Tue, 14 December 2004 08:49
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triple check relay box and wiring, both schematically and electrically..
basically you just need to hook up the DB37 wires to the proper places... as shown at:
http://www.bgsoflex.com/v22/megasquirt_ShemV2.2.pd f
if you hook up the circuits according to that, then it should work without a prob..
are you using high or low Z injectors?
Cya, Stewart
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Tue, 14 December 2004 09:26
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Ok update now
Ive hooked my fuel pressure gauge up to check pressure and it measures at intervals of 3...It has 0 3 6 9 12 and 15 on it. Now my gauge goes completely all the way around and does not open the fuel regulater. Is it possible that my gauge is a low fuel pressure on or do they measure all pressures on one gauge.
I had the pump on but could not get any pressure to come out of the return so i was thinking maybe my regulater isnt opening. If it doesnt open is it possible to push the injecters open by high fuel pressure so fuel poors straight in and floods it or do they need the pulse to open.
Im gonna go have a look some more but am concerned about my gauge now.
and im using standard 18rgeu injecters at the moment
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: ATTN: megasquirt users
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Tue, 14 December 2004 09:38
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| people100 wrote on Tue, 14 December 2004 20:26 |
Ive hooked my fuel pressure gauge up to check pressure and it measures at intervals of 3...It has 0 3 6 9 12 and 15 on it. Now my gauge goes completely all the way around and does not open the fuel regulater. Is it possible that my gauge is a low fuel pressure on or do they measure all pressures on one gauge.
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no,. sounds like a low pressure gauge, measuring in Psi.. it's probably fucked now. you need a high pressure one... can usualyl get them cheap from pirtek etc.. i have one for abotu $35 1/8NPT thread, Speco.
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I had the pump on but could not get any pressure to come out of the return so i was thinking maybe my regulater isnt opening. If it doesnt open is it possible to push the injecters open by high fuel pressure so fuel poors straight in and floods it or do they need the pulse to open.
and im using standard 18rgeu injecters at the moment
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is the pump a high pressure one? ie EFI one? if nothings coming out the reg, maybe reg is rooted? you need a gauge to tell properly...
so are the injectors high resistance (like 14ohms) or low resistance (like 3ohms)
Cya, Stewart
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Tue, 14 December 2004 11:03
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Ive got fuel coming from the reg now. i think i just got scared when the gauge went right to the top so i didnt let it keep pumping up to pressure.
My pumps im running are a vl lift pump and a vl turbo fuel pump.
Do u mean you have a gauge for sale??? what size is that actual unit itself?
I had a bit of a play with the settings. I found a spot that u put in what size your engine is and what size injecters etc and it calculates it all but still didnt get much off a difference. It seems to turn over and fire then die then fire, then die. I tried adjusting the fuel up and down but wasnt making much difference. Also noticed that on the megatune viewer its showing my throttle is staying 28% open. would that make much of a difference?
i couldnt tell you what injecter ohns i have as the original plan was i wasnt gonna touch it bascially. I was gonna help out and learn heaps from the experience. But plans change dont they 
I did some datalogging along the way but dont even know if i was doing it right  But i did notice at the bottum of the real time vier i think it was it has connected. then cranking. then running then a few others right up to accel. i managed to get cranking and running lighting up so does that mean much?
was also gettings some backing firing starting through the intake manifold coming out of the throttle body so thats basically when i decided it still wasnt gonna go so i stopped
ben
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Tue, 14 December 2004 11:32
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ive had the car running on carbs before i started the efi conversion and it was running perfectly.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: ATTN: megasquirt users
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Tue, 14 December 2004 11:52
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basically, you need to sit down for a few nights and read the megamanual:
http://www.megasquirt.info/index.html
it has almost all the answers to questions you can think of.
commonwhore pump should provide correct pressure.
yup, i ahave a gauge i decided not to use...
http://www.speco.com.au/gauges_am.html
512-20 , 1 1/2", is a 100psi gauge. has a rubber covering too to protect it... has a 1/8NPT thread that comes out at the middle of the back of it.
ahhh, Req Fuel.
you MUST get that right before you do anything else, as that is the basis of the fuel calculations.. RTFM, but basically, put in your motor size in cc or cid, then put in injector flow in cc's, and leave AFR at 14.7.. then click ok.. then "SEND to ECU"..
this tells the MS how long to open the injector if you completely fill the cylinder with air.
nope, TPS is not that important. go to 'tools' then 'calibrate TPS', then 'get current' when TPS closed, then get current when at WOT..
thats it.
you NEEEEEED to know if they are low or high resistance.. you NEED to know.. get a multimeter and check.
datalogging.. do it each time you try and start car..
"file" -> "datalogging" -> "FULL" then put in a filename.. when you hit OK. you are datalogging.. you need to go back to that menu and select "off" to stop datalogging.
and rtfm you will learn heaps if you take the time
Cya, Stewart
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Location:
Brisbane
Registered:
February 2003
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Re: ATTN: megasquirt users
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Tue, 14 December 2004 12:26
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answers to a few queries floating around:
the 18RGUe injectors are low Z - we have wired in the factory resistor pack as:
battery +
-> 30A fuse
-> main efi relay
-> Resistor-pack (with split output)
-> inj bank #1 & #2
-> ECU (on custom relay board)
the relay board is a simplified version of the diagram on this page:
<http://www.megasquirt.info/manual/mwire.htm>
the variations are:
no f/idle relay (so we can use it to run spark)
no individual fused protection on relay banks/fp etc - just one uber 30amp fuse on the incoming power line
i still have a spare line from ECU to board
i could have stuffed up the control signal (+) to the f/p relay or from that relay to ECU - that might explain why the pump's not coming on.
the settings in the ECU (last time we were playing with it) were close to Chris's (RA40_celica) settings - we were slowly ramping up the Req Fuel (and considering tinkering with: alternating versus simultaneous squirts & post-start enrichments).
Chris, can you advise what value you used for the bias resistor so you could use the stock coolant temp sensor?
Ben, one of the CD's should have the megamanual in PDF format on it - lemme know if it's not there.
cheers, charles.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: ATTN: megasquirt users
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Tue, 14 December 2004 13:39
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ahh k, so using peak n hold, maybe PWM settings are not high enough to keep the injectors open after starting?
why change the 2.49k bias resistors when you can just use easytherm just need three temp/resistance pairs, which a toyota manual should have.. or can measure..
fun fun!!
Cya, Stewart
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Location:
Hobart
Registered:
June 2002
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Re: ATTN: megasquirt users
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Tue, 14 December 2004 21:04
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ah ha... i might know your problem. The injectors are low Z and i'm NOT running any reistors, so im using PWM. My settings have PWM ENABLED, Make sure you have PWM DISABLED. It is probably starting because PWM is disabled in cranking mode, so it will start off the crankiong pulse then die once PWM mode kicks in.
I use the standard bias resistors, like stewart said, just use easytherm to calibrate. If you are using toyota coolant sensor this will need calibrating. I'm using a GM air temp sensor so this is standard.
I believe Req_fuel should be 16ms (thats from putting in 1998cc, 210cc injectors, 14.7afr in megatune). When you run 4 squirts/cycle alternating this will become 8ms.
i really think your problem is PWM, disable this.
have fun
Chris
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Location:
Hobart
Registered:
June 2002
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Re: ATTN: megasquirt users
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Wed, 15 December 2004 01:36
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btw: you may want to try this VE table, it's a cut down version (12x12 back to 8x8) of the one im currently running.
VE table:
[ 0] [ 1] [ 2] [ 3] [ 4] [ 5] [ 6] [ 7]
[ 0] = 35 33 28 29 32 36 36 35
[ 1] = 40 39 37 37 40 43 43 40
[ 2] = 47 47 47 48 52 54 54 48
[ 3] = 47 47 51 55 62 65 64 60
[ 4] = 47 47 57 62 70 75 76 75
[ 5] = 52 53 59 64 72 77 78 79
[ 6] = 57 61 69 76 84 90 92 91
[ 7] = 58 62 70 78 86 91 93 92
VE Table RPM Range
[ 0] = 7
[ 1] = 13
[ 2] = 22
[ 3] = 30
[ 4] = 40
[ 5] = 50
[ 6] = 60
[ 7] = 70
VE Table Load Range (MAP)
[ 0] = 15
[ 1] = 28
[ 2] = 45
[ 3] = 55
[ 4] = 66
[ 5] = 70
[ 6] = 90
[ 7] = 100
you'll notice to map bins are very close (66 & 70) this is because i found i needed it to richen up alot when you load up the engine at idle, and i didn't want to run a really rich idle mixture.
You'll have to enter that in by hand to megatune. if you need help i can give you an msq file, just more mucking around for me 
anyway, your first step is to make it idle! so concentrate on that first. this might help later
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Location:
Brisbane
Registered:
February 2003
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Re: ATTN: megasquirt users
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Wed, 15 December 2004 01:40
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so ... yet again i've run into an issue that's easily solved by RTFMYI 
hi chris!
thanks for the heads up on the PWM settings- i thought you were running the resistor pack... i guess assumption is the mother of all evil?
that Req_fuel value looks vaguely familiar, so we weren't far off.
as for the bias resistor, i was just trying to be a lazy slob ... oh well
the AIT is from a commode V6 so it should be OK as is.
cheers,
charles.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: ATTN: megasquirt users
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Wed, 15 December 2004 02:27
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Charles,
the US air temp and aussie air temp sensors may be different.
i'd recommend using dave jeals temp/resistance pairs that are on the OZ-MS yahoo group in the files section, and just easytherm it.
while you are there, you might want to load in Lances 2.98 code that changes the O2 disbale from being TPS, to being 65kpa MAP.
Cya, Stewart
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Wed, 15 December 2004 10:18
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Ok new news...id already tried calculating the fuel ratio by adding in engine size and injecter sizes but i was still getting a fire then die straight away.
I have done some reading of the manual but electrics and things like this are not my strong point. hence the reason ive never had a efi car.
After seeing the first post about PWM i had a look but couldnt not find anything on it. Im about to get a pen and right down everything i can get of this page as its very useful.
Charles after having a look at the VE table on the ecu im sure the settings were alot lower then that right accross the board but i could be wrong.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: ATTN: megasquirt users
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Wed, 15 December 2004 10:45
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| people100 wrote on Wed, 15 December 2004 21:18 |
After seeing the first post about PWM i had a look but couldnt not find anything on it. Im about to get a pen and right down everything i can get of this page as its very useful.
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if you are using injector resistor pack.
Settings - Constants - (and this is from THE MEGAMANUAL!!!!!!!!!!!!!!!!!!!!!!!!!!!)
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On the Settings/Constants page:
If you are running high-impedance injectors (greater than 10 Ohms), then set the:
PWM Time Threshold to 25.4 msec, and the
PWM Current Limit (%) to 100%.
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start reading before you touch the car again.. read the tuning section, read the sensors and wring section...
otherwise, answers will be in the form RTFM
good luck.
although you may not be good with electrics etc.. if you just read the manual and understand it (google if you need to), you will know enough.
Cya, Stewart
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Thu, 16 December 2004 11:42
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ok after lots of help from oldcorollas last night with setting up the ecu i finally got the car to run today. It wasnt perfect but it was running. Im not sure if its my motor or the settings but the car has to have full throttle for it idle (sort of) and then suddenly it will just start revving real hard so i have to back off straight away.
I had a small play with the req_fuel but it didnt change anything soi i guess next is to atleast get it to idle properly then start on the revs
So what next ????
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Location:
Melbourne
Registered:
August 2003
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Location:
Brisbane
Registered:
February 2003
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Re: ATTN: megasquirt users
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Sat, 18 December 2004 01:17
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well done ben!
| people100 wrote on Thu, 16 December 2004 21:42 |
So what next ????
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i think you've answered this already
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i guess next is to atleast get it to idle properly then start on the revs
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spot on!
am not sure if you have used easytherm to modify the temp curves to suit the toyota temp sensors yet - but before going too much further, i'd suggest that checkign that all the sensors's are being used correctly would be a good step - otherwise, if you get it idling and free revving as-is, you'd have to re-do the work once the sensors are correctly calibrated.
my recollection is that you/we didn't allow for the coolant temp sensor and were guessing that the australian GM sensors behave same as american models.
for folks using toyota AFM with builtin temp sensor, this chart might be of assistance:
<www.cygnusx1.net/supra/library/TSRM_MKII/fi/FI _058.html>
it might be worth comparing other TSRM's to see if toyota used the same temp sensor for all of them.
this is a 5mge toyota coolant temp sensor:
<www.cygnusx1.net/supra/library/TSRM_MKII/fi/FI _072.html>
and it too might be worth comparing other TSRM's to see if toyota used a common temp sensor.
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Sun, 19 December 2004 10:36
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after som,e thinking ive decided there probably no point setting up the settings atm as im about to put bigger injecters in and a turbo so im probably better of waiting til these mods are done then doing the work or ill only end up doing it twice.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: ATTN: megasquirt users
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Sun, 19 December 2004 10:43
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on the contrary, it is easy to set up temp sensors, and tuning is not too hard as long as you understand what you are trying to do..
if you get it right first, then when you add the turbo and bigger injectors later, you are less likely to fuck things up...
would suck more to kill the bigger injecotrs or turbo for failing to do it properly without them first
how are you going with the megamanual?
Cya, Stewart
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Mon, 20 December 2004 08:25
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im really getting sick of reading the manual actually...i dont seem to understand much of it...was alot easier to do it as you explained it all...
Ill see how i go with the settings. Atm i still have to configure? the tps and the O2senser and make sure they all work. I go on holidays on friday for 2 weeks so should have so me spare time to get alot done. Im just finding it hard to figure out exactly which bit to start at
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: ATTN: megasquirt users
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Mon, 20 December 2004 12:02
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the whole point of the MS is that it is a DIY system. it is easy to set up once you understand what it is you are setting up...
i suggest you just take a few weeks to read thru the manual, skipping the assembly. also read the FAQ's as all the commonly asked questions are there..
what is it you don't understand? if there are unfamiliar terms, google for them, same for concepts, and for the MS specific stuff, it should all be answered in the megamanual, or on the www.msefi site..
i spent a few weeks reading about 5,000 msgs when i first joined the yahoo group, and it was about a year before i bought my first one, but i knew what i was getting into... that said, mine is not installed yet 
when i explained it, i was just going by what the manual said... nothing more.
Cya,. Stewart
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Location:
Finland
Registered:
November 2002
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Re: ATTN: megasquirt users
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Mon, 20 December 2004 13:50
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| Quote: |
after som,e thinking ive decided there probably no point setting up the settings atm as im about to put bigger injecters in and a turbo so im probably better of waiting til these mods are done then doing the work or ill only end up doing it twice.
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I agree with Stewart. Im going thrue similar project than you people100. Im in similar stage than you too, mine idles already. I decided that after assemble of the megasquirt, I will give it a sort of (NA) break in period for couple months before going to turbo. With turbo there are more things prone to go wrong. I hopefully learn something about the Megasquirt in practise that cannot be learned by reading and studying. Possible children's diseases can be weeded too before frying the engine with turbo . Drive and test it while atmo.
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Tue, 21 December 2004 08:22
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i did think about that but i didnt want to go through the whole trouble of setting up exhaust and stuff like that for a NA engine when im gonna be turboing it anyway..Its just extra time and money i dont wanna be spending. I think once i get everything calibrated and make sure sensers work properly it will be alot better. Im also gonna me a new loom that is alot more neater. but on the upside, the engine will start first kick but then gets a gut load of fuel due to enrichment etc.
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Club Member
Location:
sydney
Registered:
May 2002
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Re: ATTN: megasquirt users
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Tue, 21 December 2004 09:01
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im not familiar 100% on the MS triggers but if your only just running and its rich as all fuck, half the pulse width then try again and see if it runs for a bit longer. it wont hurt the engine at idle to be a little lean, just dont lean off the higher points in the map, and before you do anything switch OFF all add on injector pulses like post start etc. if you can do that and get it to idle it just becomes a matter of selecting the next step to tune.
for instance if you got it idling nicely the next step would be to tune up accel enrichment just start in little steps and it all makes sense... the more you read and play the easier it gets.. if your willing to put in some effort others will help you sort the other issues as you can describe what YOU have or havent tried to resolve the issues
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Location:
Brisbane
Registered:
February 2003
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Re: ATTN: megasquirt users
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Tue, 21 December 2004 12:17
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ben - i'm on holidays now, so once i've got this gift giving shit out of the way we can try to get the RG running a bit better?
cheers,
Charles.
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: megasquirt users
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Wed, 22 December 2004 10:39
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sounds like a plan to me....i dont go on holidays til next week though. im building my turbo manifold next week also so should be able to get a fair bit done after that. Im about to strip my 2s wiring loom and convert that so it works on the rg so i have a neat loom.
also charles. the dump pipe with the turbo i thought u said it was 3inch. turns out to be 2 3/4 so im gonna have to make a new one up. does the waste gate have to attach to the dump pipe how you had it?
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Location:
Brisbane
Registered:
February 2003
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Re: ATTN: megasquirt users
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Wed, 22 December 2004 14:02
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| people100 wrote on Wed, 22 December 2004 20:39 |
also charles. the dump pipe with the turbo i thought u said it was 3inch. turns out to be 2 3/4 so im gonna have to make a new one up. does the waste gate have to attach to the dump pipe how you had it?
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U sure about that dump pipe? i never measured it - but it always seemed mighty big
there's no need to replicate the attachment method i used
in fact, that design (everything at right angles) was a pain as things tended to expand and pull seals/joints apart.
also having the wastgate hidden by the turbo made working on it a PITA and also contributed to drainage issues with the turbo.
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