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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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The final word on the 1jz-gte microtech - croydon tuned
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Tue, 13 May 2003 07:38
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since so many people contributed to the discussion on croydon, and the installation (especially Paul - I'd give you the thanks you deserve but your girlfriend might get jealous)
first, a word on croydon.
They were great guys. Polite, fast, had a good chat to me afterward on what they'd done. Didn't charge me for fixing the "wont start" problem, even though it wasn't their faul (loose starter wire apparently). Very pricey, yes... but I'm happy with the job they did so I'm not complaining (the pricey bit wasn't the tune, it was everything else).
Power-wise, the microtech is a slight improvement on the manual 1jz computer.
the turbo spools up much earlier, and once it hits full boost it feels a lot happier than it did with the stocker computer.
Fuel economy.... I'm only half way through testing.
the supra spent it's first microtech-powered tank of fuel with the needle on the redline (well, it would be if I had a needle, it's a digi dash. and the tacho doesn't work anyhow). Stop start traffic, max acelleration off most starts, full boost as often as it was safe to do so.
At this level of driving, the microtech is a *much* bigger fuel guzzler than the stocker. I got about 5km/L, or using 20L/100km. that's a *lot* for stock boost.
more to come when I empty this tank, driving normally
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Location:
North Sydney
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Tue, 13 May 2003 09:04
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We've yet to set up the economy maps yet Greg.
Croyden wouldn't have done them, they arn't usually done on the dyno as it's difficult to simulate the wind(drag) on a car and what vacuum the engine will be pulling.
Once those are setup it should be alot better. Need that af meter! 
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Tue, 13 May 2003 09:06
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I'm not exactly feeling affluent after the croydon bill paul 
next on my list is an air temp sensor.
maybe after that
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Location:
North Sydney
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Tue, 13 May 2003 09:33
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Yeah get that intake air temp sensor installed so we can setup the map to retard the timing with hot air intakes to prevent detonation.
I know a guy who has a wideband 02 sensor, after I get mine dynoed we'll get him a case of beer and take the sensor and laptop for a spin on the M4. Probably aim for af ratios around 15.2:1, should give some great economy.
No point in doing them before it's dyno tuned as they'll just go out of whack and have to be re-done.
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Tue, 13 May 2003 09:38
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speaking of beer, I owe you some for helping me out!
are you going to make it to the dyno day?
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Location:
sydney
Registered:
March 2003
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Tue, 13 May 2003 09:49
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y didnt u fit the air temp sensor b4 the dyno
i do afew microtech wiring jobs and i just wish they would supply an air temp sensor with most looms and ecus
theyre only 35 bucks
if u tune a car on a warm day without an air temp sensor whats to say it wont be slightly out when u fit an air temp sensor
its no use payin for 2 lots of dynos
but anyway thats my experience
place i work at dont like tuning microtechs without an air temp
sensor so we try to fit them to every one we do
just saves doin things twice in the long run
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Location:
North Sydney
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Wed, 14 May 2003 00:53
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As you say sideshow they don't come with the sensor and we wanted it placed before the throttle body on the intercooler pipe which will require some fabrication with a welder which I don't carry in my tool bag.
It's better there instead of the factory one screwed into the inlet manifold where it would suffer from constant heat soak.
As for the tuneing who's to say it won't be out for the altitude at which it's tuned at too? You could get the car tuned at Manly and live at Castle Hill which has less atmosphereic pressure and therefore the car would be running leaner constantly at home.
Where do you stop?
Besides I have some equations that easily tell you the fuel compensatation values to put in for the temperatures below and above what ambient temp the car was tuned at on the day.
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Registered:
June 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Wed, 14 May 2003 01:37
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SupraGTE,
Not hacking on you but a good system should componsate for altitiude by sensing the atmoshpheric pressure on start up. I know delco does this as does mega squirt. Don't know about others though possible the microtech does?
Roger
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Location:
North Sydney
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Wed, 14 May 2003 01:54
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Rodger,
the current Microtech doesn't have a HAC(High altitude compensation) sensor. It's a lower end management system but the advantages of LTX like wiring, tuneing, sequential firing(stock not sequential), programable inputs/outputs etc etc were recognised as better than a system doesn't have these features but does have a HAC sensor.
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Location:
gold coast
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Wed, 14 May 2003 11:05
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Will be good to see how it goes on fuel. As SUPRAGTE said aim for sky high A/F's on cruise, the greenies will kill you because the oxides of nitrogen will be at stupid levels, but it will shit all over a computer running closed loop.
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Location:
gold coast
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Wed, 14 May 2003 11:25
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What did it cost to have tuned?? I will be in this boat when exams are over.
How long did it take to tune?? Hrs??
What is there rate per hr??
I'm on the gold coast, the best on the coast would have to be chiptorque they charge out dyno time at $90 (one operator)
$160 an hr for 2 operators (power tune)
The initial tune i will perform. i will leave the fine tune to them.
I intend to run riot on all my steep streets with a trailer full of firewood (1 tonne) and the wide band lambda sensor hooked up to my ECU. Should be fun
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Location:
sydney
Registered:
March 2003
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Wed, 14 May 2003 12:11
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altitude compensation doesnt matter much in this country
theres not many hi altutudes
as long as u have an air temp sensor which can adjust the mixtures from hot days to cold days and also is good to have for when u have an very efficient intercooler
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Wed, 14 May 2003 12:58
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they charged me a flat rate of $500.
I think they would've charged more once they found out what state the tuning was in, but that's the quote they gave me, and they stuck to it!
that was to tune it from whatever the previous owner had done. It was running unbelievable badly, and apparently it took the guy 2 hours just to get the bloody thing to run properly, and *then* he could start performance tuning it
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Location:
sunny coast, qld
Registered:
October 2002
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Wed, 14 May 2003 19:45
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it's an ltx-12.. laptop controlled
and no, no boost controller (which is good, since I cant one of CM's boost controllers anyhow)
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Location:
North Sydney
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Thu, 15 May 2003 07:56
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It's difficult to run them with an auto as the engine side of the ecu is controlled by sensors on the auto box.
Like when shifting gears it severly limits power and various other things.
It could be done though by paralelling of certain sensors and leave the factory ECU in there. Just cut the injector and coil pack wiring to the factory ECU and wire the Microtech straight to them.
Paralell of the TPS,crank, cam, water-temp and air temp sensor and the Microtech will be free to control the engine whilst the factory ECU still gets all of its inputs and won't realise it's not actually running the engine.
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Location:
sydney
Registered:
March 2003
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Thu, 15 May 2003 09:13
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i recently wire dup a 1jzgte and auto box in am early soarer
with a factory ecu
then the workshop was goin to fit an ems to run the injectors and ignition
so its not a big thing
just means u need 2 lots of wiring jobs to do
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Location:
gold coast
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Thu, 15 May 2003 10:39
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You "may" have trouble with the 1J at idle because the Cam position sensors don't provide a steady enough voltage when you piggyback the ecu's.
I know of 2 cars that have had to put aftermarket hall effect sensors in where the stock magnetic reluctor sensors were not reliable enough.
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Thu, 15 May 2003 10:43
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you could just split the signal from one to both the ecu cam sensor inputs, and have the other cam sensor dedicated for the microtech (as it only uses one)
if the microtech is running everything, it shouldn' matter if the stock ecu is getting an unreliable signal
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Sun, 06 July 2003 07:13
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for those of you who doubted the croydon dyno (which put my car down as 183 rwkw), the dyno day also had me down as 185 (the extra few kw probably come from the fact it was a freezing cold day)
compared the graphs, and they're almost identical
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Location:
Cabramatta, NSW
Registered:
May 2002
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 Re: The final word on the 1jz-gte microtech - croydon tuned
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Mon, 07 July 2003 05:33
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Good to hear dude.
I was one of those doubters, but on this occasion, I'm quite happy to be proven wrong.
You must be happy!
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Mon, 07 July 2003 05:45
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hey, I was a doubter too! since most people seemed to say the same thing (all 3 or 4 of them) I assumed it to be true.. plus I didn't think my car felt that fast.
I'm glad to be proven wrong, and have to learn to shift later!
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Location:
Syndey
Registered:
December 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Mon, 07 July 2003 07:39
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i have done heaps of microtech installs, if you want a air temp sensor order it when you order a computer, its that simple, air temp sensors arnt that important but they do help espically with crusing in different weather temps,
Paul, crusing will probably be around the 14.6-15.0 mark, i have found that toyotas like to cruse alot leaner than most cars, my mazda wont cruse at 14.7:1 with out a stumble, where as a 4age will cruse at 16.5:1 with out a stumble at all and sometimes will go as lean as 18:1 with out problems
Also your cruse maps wont change when you get a dyno done, generally you will not have to touch them at all on the dyno,
if you want them done let me know and we will do them.
as for the croyden tune i know how they charge and they should do a full job including cruse maps, it only takes about 20min to get pretty good and less than a hour to get perfect.
Dale
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Location:
Gold Coast
Registered:
July 2003
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Tue, 11 November 2003 22:45
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| Pete wrote on Thu, 15 May 2003 20:39 |
You "may" have trouble with the 1J at idle because the Cam position sensors don't provide a steady enough voltage when you piggyback the ecu's.
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My JZZ30 soarer w/ Microtech LTX-12 doesn't idle very happily at all, it becomes very sensitive to electrical load - as soon as I put any load through it (indicators, stereo, lights, power windows) it idles lower and lower, until it dies. Is the above the cause of this 'sensitivity'??? if so, is there a way to overcome it?
-jason-
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Location:
Syndey
Registered:
December 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Tue, 11 November 2003 23:03
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Juicen,
sounds like the idle settings are too lean, if these are too lean you will find as the load increses the motor dosent get enough fuel and it stalls,
things like this are things that most tuners and installers dont do,
Dale
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Location:
Gold Coast
Registered:
July 2003
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Tue, 11 November 2003 23:17
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sounds simple enough ... which makes me a very happy boy
shall find me a new tuner
thank you !!!
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Location:
Osama's hideout
Registered:
February 2003
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Tue, 11 November 2003 23:18
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it is possible to run an auto with a microtech.
the way i have done it, my box is now full manual shift, so it changes gear when i move the shifter. this cost me $195 from MV automatics in black wood SA.
if you dont want to do it this way, and you want the computer to change gears for you, i am told you can just cut the wires from the standard computer you need to run the after market computer and leave the wires for the gearbox connected.
hope that helps.
shane
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Location:
Syndey
Registered:
December 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Tue, 11 November 2003 23:40
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try it yourself if you have a handset, just add a bit more fuel in the 15, 10 and 5" idle screens,
1jz.747
that is the way i do most of my installs in late model cars, just cut the ign output and injectors off the factory ecu and leave it there to run everything else.,
Dale
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Wed, 12 November 2003 01:56
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| juicen wrote on Wed, 12 November 2003 09:45 |
My JZZ30 soarer w/ Microtech LTX-12 doesn't idle very happily at all, it becomes very sensitive to electrical load - as soon as I put any load through it (indicators, stereo, lights, power windows) it idles lower and lower, until it dies. Is the above the cause of this 'sensitivity'??? if so, is there a way to overcome it?
-jason-
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have you checked what happens to the voltage?? if it goes down (and the alt isn't compensating) then you will be getting less voltage to the injectors and they may not open as fast...slightly leaning the fuel out...
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Location:
Brisbane
Registered:
February 2003
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Fri, 14 November 2003 01:09
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hi shane, (and sorry to others for this heading OT)
| 1JZ.747 wrote on Wed, 12 November 2003 09:18 |
it is possible to run an auto with a microtech.
the way i have done it, my box is now full manual shift, so it changes gear when i move the shifter. this cost me $195 from MV automatics in black wood SA.
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so part of modifying the auto box is to not need the gearbox ECU?
because i have a a340 auto box that came off my 1G-GTE engien but i was going to sell it as there was no way i could get the autoECU to talk to a megasquirt ECU.
don't suppose anyone in brisbane would know how to mod the auto to manualize it (and extract the ECU-driven bits)?
tia, charles.
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Location:
Osama's hideout
Registered:
February 2003
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Fri, 14 November 2003 02:20
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ring Michael at MV automatics.
08 83700430
he can explain.
i am unsure as to what you will still need to run the box. all i know is that the black box he just sent me makes it change gears of the shifter taking all control away from the computer. though when the car is in overdrive i am not sure if the computer still controls some things in that gear.
ask michael and tellhim your application, he is very switched on and a nice guy to boot.
shane
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Location:
Gold Coast
Registered:
July 2003
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Sun, 23 November 2003 21:56
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| oldcorollas wrote on Wed, 12 November 2003 11:56 |
have you checked what happens to the voltage?? if it goes down (and the alt isn't compensating) then you will be getting less voltage to the injectors and they may not open as fast...slightly leaning the fuel out...
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i watch my turbo timer - which reads voltage when the car's on - and as the car starts to burble and idle lower and lower - the voltage goes from 14.5V - 15V, down to about 12.5V in small increments - until it stops idling.
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Location:
Syndey
Registered:
December 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Sun, 23 November 2003 22:58
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Juicen
Try adding some more timing to the idle map, this may fix the problem
Dale
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Location:
USA
Registered:
April 2004
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Wed, 28 April 2004 02:35
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I purchased a ltx12 for a 1jzgte engine
I'm having trouble getting the system to idle.
when I start it starts then runs for a few seconds then cuts off
if I touch the throttle, the car cuts off instantly. the dealer said the system was configured for 550 injectors. my engine has 380 injectors
can you please send me the configuration necessary to maintain idle?
can you point me in the direction in troubleshooting the problem?
the TPS was calibrated without issue
I also notice the injector pulse fluctuate allot when it tries to idle
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Location:
Syndey
Registered:
December 2002
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Re: The final word on the 1jz-gte microtech - croydon tuned
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Wed, 28 April 2004 03:29
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the eaiset way to work out what the motor is doing is to use the mixture trim function, try adding 15% to the mixtrm setting in the options screen and see if it is better, keep adding or subtracting fuel until the car revs good, then see if it will idle, if not adjust the IDLE settings until it does idle, once it does you will need to set the timing and your good to go.
also use these forums for microtech related questions
http://microtechefiusa.com/forums/
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