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Registered:
January 2004
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1JZ & Auto aftermarket ecu
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Sat, 24 January 2004 02:06
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Does anyone know of an ecu that can run the 1jz with auto (A340E) in this case.
Or is the only option to use things like SAFC's.
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Location:
sydney
Registered:
March 2003
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Registered:
January 2004
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Re: 1JZ & Auto aftermarket ecu
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Sat, 24 January 2004 04:38
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I'm in NZ.
I'm will be after an ECU because I have a HKS 3240 turbo kit to fit.
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Location:
sydney
Registered:
March 2003
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Re: 1JZ & Auto aftermarket ecu
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Sat, 24 January 2004 05:00
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ok
u can always go manual gbox
or get an ecu that can do the automatic aswell
the problem is u have overdrive switch and the power/economy switch
also u have speed sensor which is used to get the auto to change gears
these wires go into the ecu and then the engine ecu controls the auto
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Location:
perth WA
Registered:
January 2003
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1JZ & Auto aftermarket ecu
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Sat, 24 January 2004 07:36
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So for someone that doesn't want to go single turbo for quite a while but wants to alter fuelling, get rid of speed cut, boost cut and fuel cut, what would be the best option? (Will i need boost cut and fuel cut defenders to run 15psi?)
S-AFC and some defenders
or
Programmable computer piggybacked onto standard ECU to run fuel and ignition.
Money is an object 
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Location:
sydney
Registered:
March 2003
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Re: 1JZ & Auto aftermarket ecu
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Sat, 24 January 2004 09:53
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u have a std ecu dont u bass
then all u need is to run say a microtech or ems as a piggyback
use the std ecu to run the gbox and externals
then use the aftermarket ecus to run injectors and timing
its been done afew times and i know it works
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1JZ & Auto aftermarket ecu
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Sat, 24 January 2004 09:58
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thanks for that.
the only thing i was worried about is the cost of tuning an aftermarket ECU compared to just fitting a SAFC that comes with a base map. But for the price of an LTX12 or a wolf 3d compared to a SAFC and all the assorted defenders, i think it is a better idea to go aftermarket ECU.
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Location:
sydney
Registered:
March 2003
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Re: 1JZ & Auto aftermarket ecu
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Sat, 24 January 2004 10:16
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tunin a safc is still costly if u want to tune it properly
i way prefer aftermarket ecu to a safc
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Location:
Brisbane
Registered:
February 2003
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Re: 1JZ & Auto aftermarket ecu
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Sat, 24 January 2004 12:24
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| bassaholic55 wrote on Sat, 24 January 2004 17:36 |
<big snip>
Programmable computer piggybacked onto standard ECU to run fuel and ignition.
Money is an object
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budget version then?
-Megsquirt - squirt-n-spark version (aux air hard wired to cold-start sensor and A/C controller only)
-k-dog's sequential gearbox controller
a groupbuy megsquirt costs you about $350 - you have to join the oz megasquirt list to find out when next buy is happening.
k-dog's controller costs $350 - plus what ever work you do to the gearbox - works on A340E/A341E/A342E gearboxes.
both of these require skill in building/wiring electrical equipment - plus allow another $300 for bits-n-pieces.
ECU is tuned with a laptop - if the engine has a dizzi, you lock any mechanicals in it and use the reluctor sensing 6 triggers per dizzi revolution - if it's coilpacks, then import 6cyl EDIS parts from the US and run squirt-n-EDIS code on the ECU.
i'll be doing this with my 1G-GTE and running the auto box as a sequential unit.
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Registered:
January 2004
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Re: 1JZ & Auto aftermarket ecu
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Sat, 24 January 2004 18:54
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Looks like manual might have to be the go.
I've found a JZX81 in Japan that runs the stock ecu with a HKS FconV Pro.
This is going to get expensive I think.
I might see if I can get an Haltech to piggyback the stock ecu
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: 1JZ & Auto aftermarket ecu
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Mon, 26 January 2004 03:18
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| MRJZX wrote on Sat, 24 January 2004 13:06 |
Does anyone know of an ecu that can run the 1jz with auto (A340E) in this case.
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Motec M800. All you need is the hysteresis points for the auto.
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Location:
sydney
Registered:
March 2003
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Re: 1JZ & Auto aftermarket ecu
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Mon, 26 January 2004 03:27
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by the time u finish installina nd tunning the motec u might end up payin about 4000 bucks
thats its only downfall
its cheaper to run std ecu and a piggyback ecu
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Location:
Perth
Registered:
October 2002
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Re: 1JZ & Auto aftermarket ecu
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Fri, 30 January 2004 04:55
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I've been ponering this one all week ....
How would you use the Motec to run the auto? And if it's just by plugging the sensors and aux. inputs/outputs through the Motec, couldn't you do the same thing with a Haltec E6X?
cheers,
Justin
JZA61
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Location:
sydney
Registered:
March 2003
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Re: 1JZ & Auto aftermarket ecu
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Fri, 30 January 2004 06:30
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mot3c has digital inputs and outputs
its bit technical but can be done
dont know bout latest haltech
but i dont know of any haltech that will do auto changes
motec is only aftermarket ecu that will do engine and auto gbox
in one unit and expect to pay alot for it
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Location:
Perth
Registered:
October 2002
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Re: 1JZ & Auto aftermarket ecu
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Fri, 30 January 2004 06:46
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Ah-ha. Thanks heaps, Mr. Sideshow
I still haven't been able to find an auto JZX90 wiring diagram and my auto-electrician is getting a bit nervous about the 3-odd kilometeres of spaghetti that he has to wire in.
So, I'm just thinking about some alternatives - like either the Motec or K-Doggs standalone and a mid-level ECU. I'd have to see if the engineer would be OK with that first. Hmmmm ...
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: 1JZ & Auto aftermarket ecu
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Fri, 30 January 2004 06:49
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You need to setup a speed sensor and then create a 'table' using speed and 'engine load' (TPS). You then use it to control outputs to switch the auto. It is not simple as you have to set it up across a large range of variables to create the hysteresis points, and it takes about a day of dyno time (according to the tuner). Read exxy.
Like Sideshow has said, probably not worth your while if you are sticking to standard everything.
I can't comment about the Haltech.
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Location:
sydney
Registered:
March 2003
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Re: 1JZ & Auto aftermarket ecu
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Fri, 30 January 2004 07:55
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the auto is easy to wire up on a 1jz
all the auto wires should be in the factory loom
all u have to add is the speed sensor signal form the dash
the overdrive signal from o/d switch
and a power/economy switch
im sure theres a 1jz specs website somewhere
try here
http://www.1jz-gte.us/92Supra6.html
i have done afew with auot and std ecu and have had no probs that i couldnt fix
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Location:
Perth
Registered:
October 2002
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Re: 1JZ & Auto aftermarket ecu
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Fri, 30 January 2004 08:08
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Sadly, that's the single turbo VVTi JZX100 diagram. 
It's no so much the auto, but the whole lot that is hard without diagrams - it has all that ABS, traction control, etc. Hence, if we could go after-market ecu & geabox controller - wiring would be easier and it would beat the hell out of stock unit and piggyback A/F interceptor.
Whatcha reckon?
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Location:
sydney
Registered:
March 2003
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Location:
sydney
Registered:
March 2003
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Re: 1JZ & Auto aftermarket ecu
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Fri, 30 January 2004 08:35
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i just looked at my little book
only thing i can find is that the vvti 1jz is from a jzx 110
and it has big computer for engine and another big ecu for auto
what ecu configuration do u have
do u have one ecu that does engine and auto
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Location:
Perth
Registered:
October 2002
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Re: 1JZ & Auto aftermarket ecu
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Fri, 30 January 2004 08:51
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Mine looks suspiciously like the (4row x 4plug) JZZ30. And nothing like the JZX100 - which I'm pretty sure is the VVTi Ct20 with AFM, though I'm no expert on Chaser nomenclature.
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Location:
sydney
Registered:
March 2003
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Re: 1JZ & Auto aftermarket ecu
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Fri, 30 January 2004 08:54
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the jzz30 is easy to find info on
that computer does both the engine and auto
most of the auto wiring should be intact with the engine loom
i hope yr electrician hasnt split the engine loom apart aswell
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