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Old 06-27-2016, 10:36 AM   #1
Kirkathon
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Member#: 354232
Join Date: Apr 2013
Chapter/Region: MWSOC
Location: Ohio
Vehicle:
2004 Impreza WRX
Java Black Pearl

Default Northeast Ohio Subaru Tunes?

Hello, i have recently rebuilt my 04 Subaru WRX 2.0l and now is the challenge of getting it to pass E-Check.
I put a header back stainless exhaust with a cold air intake and now the car is throwing codes P0171 for the engine running lean, too much air flow it seems.
I was under the impression that the engine would run at peak efficiency with an intake and exhaust but it seems the computer is confused.

Also, would it be possible with tuning to eliminate an emissions code (P1400) and the catalytic converter code (P0420)?

Is there anyone in the Northeast Ohio area that does Subaru tuning? Or will i have to yank my ecu and send it out to get tuned somewhere? Just looking to get this accomplished ASAP since my temp tags expire in 3 weeks and i need the CEL off to pass E-Check.

Thank you for your help.
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Old 06-27-2016, 11:37 AM   #2
Creel
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Member#: 341772
Join Date: Dec 2012
Chapter/Region: MWSOC
Location: Cincinnati, Ohio
Vehicle:
2003 Impreza WRX
Plastidip White

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If don't mind driving it down to the Cincinnati area Turn In Concepts can do it on their dyno.
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Old 06-27-2016, 01:21 PM   #3
seroki
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Join Date: Jul 2014
Chapter/Region: MWSOC
Location: Cincinnati, OH
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16 WRX (RIP)
Pure Red

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Buy a Cobb Access Port, get etune for your mods. BrenTuning can do it, and I imagine TiC can do it as well. Don't drive it without a tune that accommodates for the mods that are installed.

Also, Ohio got rid of E-Check years ago. If your county requires it, go get your tags outside of the county, no e-Check required.
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Old 06-27-2016, 02:43 PM   #4
Kirkathon
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Member#: 354232
Join Date: Apr 2013
Chapter/Region: MWSOC
Location: Ohio
Vehicle:
2004 Impreza WRX
Java Black Pearl

Default

So you're saying that even though i live in a county that still requires E-Check, that i can go outside of this county to register the car at a different license bureau?

I really didn't think an intake and exhaust would cause so many problems on a 12 year old car. It's not like i tooled around with bigger cams or a turbo or injectors or anything.

I understand why it is causing problems, just didn't think it would.

Last edited by Kirkathon; 06-27-2016 at 02:55 PM.
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Old 06-28-2016, 09:58 AM   #5
Creel
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Join Date: Dec 2012
Chapter/Region: MWSOC
Location: Cincinnati, Ohio
Vehicle:
2003 Impreza WRX
Plastidip White

Default

Quote:
Originally Posted by Kirkathon View Post
So you're saying that even though i live in a county that still requires E-Check, that i can go outside of this county to register the car at a different license bureau?

I really didn't think an intake and exhaust would cause so many problems on a 12 year old car. It's not like i tooled around with bigger cams or a turbo or injectors or anything.

I understand why it is causing problems, just didn't think it would.
I was at TiC the other day and someone called asking the same thing. They said that sometimes it can do that on these cars. I remember when I did an intake on mine I ended up going back to stock pretty quickly. Could try giving them a call and see what's up, unless it was you who was calling them on Friday .
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Old 06-29-2016, 10:28 AM   #6
Kirkathon
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Join Date: Apr 2013
Chapter/Region: MWSOC
Location: Ohio
Vehicle:
2004 Impreza WRX
Java Black Pearl

Default

Yep that was me lol they were less than impressed with my choice of intake but apparently it works pretty well if the engine is running lean.

I can put the stock one on and maybe get rid of the P0171 code but i still have that P0420 catalytic converter code and the ridiculous P1400 code so i might need a tune regardless.

I have learned my lesson about these mods on subies: don't touch anything unless you are willing to compensate for it in the ECM.
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Old 07-12-2016, 01:46 PM   #7
carse
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Member#: 237993
Join Date: Feb 2010
Chapter/Region: MWSOC
Location: CBUS/N E OH
Vehicle:
75 MGB

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Redline Tuning - Columbia Station, OH

or

TPG Tuning - Blairsville, PA
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Old 07-13-2016, 07:51 AM   #8
WillDenham
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Join Date: Dec 2004
Chapter/Region: MWSOC
Location: Danville, Kentucky
Vehicle:
2017 WRX STI
World Rally Blue

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Quote:
Originally Posted by Kirkathon View Post
Yep that was me lol they were less than impressed with my choice of intake but apparently it works pretty well if the engine is running lean.

I can put the stock one on and maybe get rid of the P0171 code but i still have that P0420 catalytic converter code and the ridiculous P1400 code so i might need a tune regardless.

I have learned my lesson about these mods on subies: don't touch anything unless you are willing to compensate for it in the ECM.
Anything power related really needs to be included in your tune, or you're asking for trouble as you said. I'd recommend avoiding intakes on most WRXs and STIs until you're well past the threshold and actually need some more airflow to make the power. A lot of tuners don't even recommend them until you're in the high 300HP range.

They can make some cool noises, but they're extremely limited on performance gains.
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Old 07-28-2016, 02:10 PM   #9
Kirkathon
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Member#: 354232
Join Date: Apr 2013
Chapter/Region: MWSOC
Location: Ohio
Vehicle:
2004 Impreza WRX
Java Black Pearl

Default

Ok, so i have gotten rid of the P0571 and P0420 codes by putting my stock intake and tricking my cat 02 sensor with spark plug defoulers, respectively.

Now i am completely stuck on the P1400 code and i can't pass e check with it on.
First i would clear the code and start the car and the code would come immediately back on.
So i found a couple loose hoses next to the charcoal canister and put hose clamps on them.
Now, when i clear the code, it will stay off as long as the car is running but will reappear when the car is restarted.
This is a problem as stick shift cars have to be restarted in the e check facility and there is no way around that.
Any help would be greatly appreciated, i am about to go get another gas cap but i think if it was the gas cap it would throw the P0457 code, which it is not.
There has to be some part of this emissions system that malfunctions without leaking and i need to know what it is lol
O and the charcoal canister has 12V running to it no problem and the wiring looks in good shape.
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