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Old 04-21-2021, 11:43 PM   #1
SubieNoobWRX
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Member#: 485036
Join Date: Apr 2018
Default '02 WRX Stage 2 Tunes?

I have a 2002 WRX that I picked up at a repo auction. After a few years, I finally have it running, however, I am in desperate need of a tune!
I have no doubt that the previous owner removed his tune before the car went to auction, and I want to get something on it before I start driving and logging for fine tuning. I have a Vag-Com cable, RomRaider, and ECU Flash.
The car has the following mods. It came this way, I have not added anything other than a new air filter.
Cobb intake
Perrin catless downpipe
Cat back with muffler, but resonator removed
Stainless unequal length headers
Perrin EBS (I don't know if I have it hooked up properly)
FMIC (appears to be some type of generic one)
TGV deletes
Pink injectors

I have done:
JDM EJ205 swap (all components swapped from USDM to JDM engine)
New O2 sensors
New plugs
New timing belt
And so on...
I have also added a boost gauge, wideband O2 and oil pressure.
*I do not have the wideband hooked up for logging, but the parts are ordered.
For the car, and why I am needing a tune. It starts and runs fine, however, it throws a system lean (P0170) code after a while. I have checked for vacuum leaks so many times I'm sick of it. Once I got the boost/vacuum gauge installed, I have been monitoring it, and it runs betwen 17 and 19 in. of vacuum and holds steady. The MAF has been cleaned, as has the MAP sensor and IAC. They also have new gaskets installed. The P0170 is the only code it throws, however, the idle is kind of rough once it warms up. My thoughts are that it has the stock tune, and the Cobb intake is making my AF ratios wonky.
Is there someone out there with a Stage 2 file or advice?
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Last edited by SubieNoobWRX; 05-06-2021 at 01:09 PM.
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Old 05-03-2021, 05:23 PM   #2
kopele
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Member#: 363007
Join Date: Jul 2013
Chapter/Region: MWSOC
Location: MO
Vehicle:
2008 STI
Black

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Grab your stock map from the romraider forums and compare it to the map on your car. That should tell you if you have the stock tune. Make sure injector scalar and latency are correct, you can get them from the stock map of whatever car they came from. Then scale your MAF table, if needed. You can find guides here and on romraider.com, good luck and have fun
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Old 05-03-2021, 10:42 PM   #3
GeoNV
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Member#: 518830
Join Date: Sep 2020
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2009 WRX
dark grey metallic

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There’s also some good stage 2 basemaps you could grab from there as a starting point if your rom is stock after the previous comments checks.
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Old 05-04-2021, 01:25 PM   #4
GeoNV
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Join Date: Sep 2020
Chapter/Region: RMIC
Location: Colorado
Vehicle:
2009 WRX
dark grey metallic

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here's the place to look: https://www.romraider.com/forum/viewforum.php?f=28

https://www.romraider.com/forum/view...p?f=28&t=18378
this might work for you.

You'll have to scale your MAF since you have an intake on it. you might be able to find one like yours and then just adjust it a bit.
https://www.romraider.com/forum/viewforum.php?f=31

give this a read first- helped me get started! https://forums.nasioc.com/forums/sho....php?t=1626520
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Old 05-04-2021, 02:31 PM   #5
SubieNoobWRX
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Join Date: Apr 2018
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Quote:
Originally Posted by kopele View Post
Grab your stock map from the romraider forums and compare it to the map on your car. That should tell you if you have the stock tune. Make sure injector scalar and latency are correct, you can get them from the stock map of whatever car they came from. Then scale your MAF table, if needed. You can find guides here and on romraider.com, good luck and have fun
I'll do that, thanks for the information!
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Old 05-04-2021, 02:31 PM   #6
SubieNoobWRX
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Quote:
Originally Posted by GeoNV View Post
here's the place to look: https://www.romraider.com/forum/viewforum.php?f=28

https://www.romraider.com/forum/view...p?f=28&t=18378
this might work for you.

You'll have to scale your MAF since you have an intake on it. you might be able to find one like yours and then just adjust it a bit.
https://www.romraider.com/forum/viewforum.php?f=31

give this a read first- helped me get started! https://forums.nasioc.com/forums/sho....php?t=1626520
Awesome, thank you!
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Old 05-06-2021, 10:01 AM   #7
SubieNoobWRX
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Alright, I have a dumbass question. I purchased a Vag-Com FTDI 232RL cable, which I thought would work with an '02. However, I have seen some sites saying that the cable won't work with an '02 is this true?
I can get it to log without issue, it will not read the ECU though.
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Old 05-06-2021, 10:37 AM   #8
Homemade WRX
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Chapter/Region: MAIC
Location: Milton Keynes, UK
Vehicle:
96 3MI Racing
search FIRST, then PM!!!

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Quote:
Originally Posted by SubieNoobWRX View Post
Alright, I have a dumbass question. I purchased a Vag-Com FTDI 232RL cable, which I thought would work with an '02. However, I have seen some sites saying that the cable won't work with an '02 is this true?
I can get it to log without issue, it will not read the ECU though.
I thought you said you had the Tactrix cable in the first post. Why would you buy the VAG cable?

I know there had been issues for specific years only being able to log with VAG. So not surprised.
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Old 05-06-2021, 10:38 AM   #9
SubieNoobWRX
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Quote:
Originally Posted by Homemade WRX View Post
I thought you said you had the Tactrix cable in the first post. Why would you buy the VAG cable?

I know there had been issues for specific years only being able to log with VAG. So not surprised.
Holy crap, I did put Tactrix in there, I apologize!
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Old 12-20-2021, 05:59 AM   #10
jstins0n17
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Quote:
Originally Posted by SubieNoobWRX View Post
2002 WRX
Cobb intake
Perrin catless downpipe
Cat back with muffler, but resonator removed
Stainless unequal length headers
Perrin EBS (I don't know if I have it hooked up properly)
FMIC (appears to be some type of generic one)
TGV deletes
Pink injectors

I have a similar setup, but with a cobb, looking at making the cross over to open source, so may be shooting some questions over your way lol
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Old 12-20-2021, 09:42 AM   #11
SubieNoobWRX
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Go for it! Open source is nice!
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Old 12-20-2021, 11:28 PM   #12
jstins0n17
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Quote:
Originally Posted by SubieNoobWRX View Post
Go for it! Open source is nice!
that's what its starting to seem like lol, but i need to find someone to take over the cobb first and then figure out what all i need to get this route started
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Old 12-22-2021, 09:29 AM   #13
SubieNoobWRX
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Talk to Alex @boost_reality on Insta. He's who I'm using, and he's amazing.
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