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Old 05-02-2005, 11:00 PM   #1
nate1654
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Default jdm version 8 into 02 wrx

I am about to start my swap, done swaps before but never a V8. want to know if anyone knows anything about tthe wiring required for this one. i really need a ecu pin out for the JDM ecu.....


thanks!!
nate
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Old 05-02-2005, 11:19 PM   #2
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Pretty much the same as a V7.
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Old 05-03-2005, 12:21 AM   #3
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avcs..pinouts...would be nice..if you had the jdm ecu..
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Old 05-03-2005, 01:11 AM   #4
nate1654
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i have only done a V5, and had a very smart person help me. i also have the IA avcs wiring harness, so im not really worried about the avcs....or should i be??
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Old 05-03-2005, 02:55 PM   #5
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Drop it in then run the AVCS wires. Done!

-Jon
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Old 05-03-2005, 11:33 PM   #6
nate1654
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yeah, i talked to a few people and found out it is going to be very simple. does anyone know where you can get a after market down pipe for the twin scroll?? and i also would like to know how much boost can a V8 take? i have heard of people running 21.5 psi but i dont know what fuel they were using, any comments/suggestions would be great. i dont know a lot about the V8 so if you know anything let me know please!!!

thanks,
nate
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Old 05-04-2005, 12:21 AM   #7
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oh yeah, one more thing. i was told i need to have kingpin flash my ecu, anyone know if i really need it or not?

Last edited by nate1654; 05-04-2005 at 01:00 AM.
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Old 05-04-2005, 12:39 AM   #8
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LOL yeah, I can tell you why you need to have it tuned.

How does 200whp at 12.8:1 AFR on only 9psi sound (lean, is what I'm trying to say)? My ECU, stock, wants to run about 10 more degrees of advance at mid load, when compared to a WRX, and a max of 18.5psi. All the while, hitting absurdly lean fuel targets and audibly detonating. My car seemed oddly mismatched since my fuel targets got a lot closer when I changed the fuel injector scaler, but it still wasn't right even at an easier 9psi.

This is all for a V7, mind you, but I've no reason to believe it is any easier. In fact, I read in a Japanese magazine that they ran a bit more boost than the V7.

-Jon
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Old 05-04-2005, 01:00 AM   #9
nate1654
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i have afcll, will that help??
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Old 05-04-2005, 01:18 PM   #10
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YEah The V8 drops right in. We have an AVCS harness available or can offer you a diagram on how to wire it up. Not only is the car lean it is running an insane amount of timing form the factory. Without tuning it will destroy your motor, unless you runn 100 oct+ all the time. Thanks.

M
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Old 05-04-2005, 01:46 PM   #11
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on 91 octane im sure. But people have run there swaps with stock boost on 93 octane for ahwile with no problem
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Old 05-04-2005, 04:17 PM   #12
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I know this ventures into an engine management discussion, but after altering my injector scaler and bringing my fuel targets inline, my car pretty much wants 4-10 degrees of knock advance. It seems happy to run lots of timing once the fuel got taken care of.

-Jon
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Old 05-05-2005, 11:12 PM   #13
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hey thanks, i talked to people at pdx and they are going to do it. so what can you guys tell me about deltadash?
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Old 05-06-2005, 05:19 AM   #14
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Deltadash is the EcuTek brand datalogger. You can also change ECU settings with it aswell. More here: http://www.ecutek.com.au/delta-dash.htm

I never ran straight pump (92octane here) on my motor once I talked to Clark @ Kingpin. I didn't wanna risk it. I did drive to Seattle and back on pump gas but I didn't really go into boost much. The real danger of the Ver8 ECU is it wants to run alot of timing... I had PDX tuning take out some timing and it ran fine on pump gas till I could sort some wiring issues and get it back on the dyno.

PDXTuning tuned my Ver8 JDM STi motor in my car. We couldn't get the turbo to hold boost higher up or it would have made alot more power. 261whp was @ 13psi at the top end. It makes 20psi around 3,200rpms I think and then tapers - I didn't get to see those charts but I think that's what they said.

The dyno:
Matrix Matrix Integrated'd Mustang AWD 500 Four Wheel Drive Chassis Dynamometer (A stock USDM STi makes 230-240whp on this dyno.)

First run and last run:

http://img.photobucket.com/albums/v4...arerunsweb.jpg

There's a couple ways to do it like I said before helper spring, upgraded actuator and a non bleed off type boost controller might do the trick aswell.

As far as downpipes the VF36/37 flange is different than the USDM but you can buy a laser cut twinscroll flange from a couple places and have that welded to a USDM style Bellmouth downpipe.

For now I'm just running the JDM downpipe with no cat (it has a short bellmouth to 2.25" piping)

-Tim
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Old 05-06-2005, 09:36 AM   #15
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now thats a reply! thanks man!
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Old 05-07-2005, 01:38 AM   #16
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does anyone now what to do with the speedo plug on the tranny, its different. it still has 3 wires, can i just splice them.....(just want to be sure.)
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Old 05-07-2005, 03:40 AM   #17
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I almost all the wires @ the ECU for mine. So it should work with the WRX one too...

Someone with first hand experience might be able to chime in.

-Tim
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Old 05-07-2005, 10:46 PM   #18
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so just so everyone knows (dont know if anyone really cares) but the swap is going well so far. i have all the brembos on, i had to put on new hud in the rear. i got the rear diff on, that was very simple. i have also got my interior almost done, i am putting in new seat and gauges. i got my back seats redone in blue and black leather and got all that in and it looks great. i looked at my new version 8 yesterday and noticed the timimg belt cover was broke so i took it off and saw there was a cam gear broke..but i am lucky i have just like it off my other motor. the timing belt is also messed up but i was going to put on a new one anyways. im a little upset with sunrise janapesse, they are not really working with me to well on the broken parts so if i was anyone is planning on buying a motor i would noit recomemd them....if they get better i will post it. so anyways thats where i am. i have not even really got to the swap part yet but have looked at everything and i dont think its going to be bad. thanks for everyones help and keep the info coming!!

thanks,
nate
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Old 05-07-2005, 10:49 PM   #19
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Be very careful with the broken gear. It is highly likely that your pistons spun independant from the valves and you have bent valves and/or damage pistons because of it.

-Jon
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Old 05-07-2005, 11:20 PM   #20
nate1654
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im pretty sure it was done in shipping just because of how it looks. the motor is still in timing. it just broke off a lip of the gear. but yeah if it is messed i am going to be very mad.
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Old 05-09-2005, 01:13 AM   #21
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this thread has been very helpful as i am about to do a V7/V8 swap, keep the info coming!!!
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Old 05-10-2005, 11:06 PM   #22
nate1654
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okay so i have a question. there is an extra plug ont the tranny, anyone know what to do with it? the sensor on the top og the donw pipe, what to do with that?

thanks,
nate
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Old 05-10-2005, 11:46 PM   #23
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what colour is it?
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Old 05-10-2005, 11:53 PM   #24
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well it goes into a gray plug. there are the white and black ones that fit the usdm plugs and then they all go into the gray plug (6 wires total). the 2 wires i cant figure out go into the passager side of the tranny. that is the tranny one. the one on the dp has no plug, i think it got broke off....there are 3 wires on that.
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Old 05-11-2005, 01:26 PM   #25
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Can anybody take a picture of the back of the VF37 so I can see what the flange of the downpipe looks like? Thanks.
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