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Go Back   IWSTI.com: Subaru WRX STI Forums > IWSTI Engine & Drivetrain > 2.5 Liter/Litre Factory Motor > GD-Exhaust


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Old 07-10-2009, 01:58 PM   #1
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Default headers and uppipe throwing codes?

I hope i'm asking this question in the right place...I just bought gruppe s uel headers and uppipe. I was told by gruppe S themselves that when I install this I'll get i think they said CEL codes or something of that sort. Is that true? My current mods are Turbo XS catless downpipe and exhaust, and a cobb accessport no protune yet. Don't 05 and up STI's have catless uppipes anyway? why would installing these headers and uppipe make the car throw codes?
thanks
again i'm a noob so sorry if i posted this in the wrong place
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Old 07-10-2009, 05:40 PM   #2
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Default Re: headers and uppipe throwing codes?

some one will correct me if im wrong but the cobb ap should correct those possible cel's anyways. also i dont think you should have wasted your money on an uppipe with the uneaqual lengths, its not really needed.

if i were you i would get a tune asap, especially since you have a custom dp.
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Old 07-10-2009, 07:45 PM   #3
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Default Re: headers and uppipe throwing codes?

cobb ap is suppose to correct the cel.
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Old 07-11-2009, 03:00 PM   #4
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Default Re: headers and uppipe throwing codes?

thanks! looks like i'll be puting them on as soon as I have them coated! Oh and the up-pipe was pretty much free so figured why not?
thanks again!
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Old 07-30-2009, 08:50 PM   #5
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Default Re: headers and uppipe throwing codes?

in the market for headers, how much did you pay for them??
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Old 07-31-2009, 08:48 PM   #6
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Default Re: headers and uppipe throwing codes?

299 for the headers and like 90 bucks for the uppipe!
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