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Discussion Starter · #1 ·
ok...super long story. try and get to the point though. had a 1jz (non vvti) that was swapped into a 240 and ran fine...one day stuff started to kinda hickup and the car died...seemed like everytime i started it got worse and worse. check ecu and it's fried...so i decided to play with the harness to run the 1jz with a jdm aristo auto ecu. i got everything hooked up and it'll start but it is kinda missing..Runs VERY Very rich..smoking out the exhaust gettin high off fuel vapors. haha. i'm thinkin the misfire feeling might be from just runnin so frikkin rich...so off to where some problems are..

1. i don't have power to my sensors...such as tps, map, iat...not sure if they should...i read in a couple places where they said to wire a 12v to idl (tps). the map sensor shows no signs of power except for 5v at the signal wire?? there's no power to the 5v refernce..which kinda confused me as if they are backwards for some odd reason? when starting up the car i can unplug both map and tps and it doesn't change anything..car still revs up and shit the same way as when they are plugged in.

2. i do not have the neutral safety switch wired up in any way...i wasn't sure what all that controls...i think it was overrided so the car starts no matter what but i'm not sure if with the auto ecu if that not being hooked up can cause power not to flow...like i dunno, maybe to my sensors? haha.

3. injectors work, ignition works...it's just somethin weird with my sensors. just seein if anyone else has had similar problems...i'm just not sure if i missed a wire to provide power to the sensors or what? please help. thanks.
 

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VC??? Pleas elaborate. I've been hearing some conflicting info. You're saying that you are running a 1jzgte on a 2jzgte (aristo, auto) ecu? I'm assuming you're using a saorer harness (as opposed to a jza70 supra harness). Does your ecu plug right in, or are you using some type of patch harness? Thanks!
 

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im kinda interested in the overall setup itself. Does it yield any performance benefits? Anything that needs to be swapped or rewired to make it work? very interested to see how this turns out
 

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It would work just fine as long as he ran the aristo harness/ injectors with the aristo ecu. The non-vvti 1jz's are batch fire vs. aristo's not, 370cc vs. 440cc. There are some things in common but with the right combination you are just fine. I would also like to know more about the setup.
 

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Discussion Starter · #6 ·
sorry people, haven't checked this thread in a while. ok, it's a 1jz out of a jza70 supra with a jza70 harness. my jza70 ecu took a poop so i figured with how they are known to always take craps...i basically cut off those ecu plugs and just soldered all the wires to the proper spots in 2jz ecu plugs...so i'm runnin a 1jz single turbo jza70 swap with a jdm 2jz aristo auto ecu...it's runs perfectly fine..i was worried about the injectors since the aristo ecu is made for 440's and i'm still on 370's...doesn't hurt one bit! i let the car idle for a few mins and it adjusted to where the idle had air fuels going between 14.5 and 15.5 just like i've read 2jz's normally do. i have a precision 60-1 turbo. i was able to run 14lbs on bone stock ecu without the apexi neo. a/f's were in the 10.2-10.5 range with bone stock ecu. it's actually a sweet setup. all i did was take some fuel out and that enabled me to turn up to 15lbs and just be shy of boost cut. i've been meanin to make a build thread cause i had a hard time finding info on this setup and it works beautifully.
 

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Discussion Starter · #7 ·
and the "vc" is basically the 5v that gets sent to the main sensors so they actually work. lol. forgot to hook that wire up so i was runnin with no map or tps or anything...as soon as i connected that wire all ran perfect.
 

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Discussion Starter · #8 ·
as far as differences...i had to cut the signal wire from each injector and run each one individually to the ecu...which was as easy as it sounds. stock 1jz ecu runs batch fire. uhhh....i believe that's the only change i had to make...just cut them all and wired to the right spot(which takes a lot of time, was around 30 wires i think) and add the wires for injectors....and tada. 2jz ecu which wont have leaking capacitors :)
 

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Sorry to drag up an old thread, but Is it necessary to switch the injector wiring from batch to sequential? I could see the mpg benefits, but would it still work to leave injectors fired as batch?
 
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