Will By-Pass Pipes cause a Check Engine Light??

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Dec 16, 2008 | 04:49 PM

Jeff SD

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Will By-Pass Pipes cause a Check Engine Light??

I was recently told that By-Pass pipes will cause a CEL..Is this true?
I ordered a set of Fabspeed pipes for my CTT and i'm a little concerned.

Thanks

Dec 16, 2008 | 04:50 PM

GT3 Chuck

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no way...I've had them on and off for 3 years with never a cel..changing cats or bypassing cats is an entirely different matter...btw...they will be loud

Dec 16, 2008 | 05:06 PM

sharkster

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Not on the Cayenne... you're bypassing the secondary cats and the 02 sensors go in front and right behind the primaries so you're fine...

Dec 16, 2008 | 06:38 PM

Jeff SD

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Quote:

Originally Posted by sharkster

Not on the Cayenne... you're bypassing the secondary cats and the 02 sensors go in front and right behind the primaries so you're fine...

Thanks, Alex/Chuck!
Sounds like I was misinformed.

Jeff

Dec 16, 2008 | 06:40 PM

BoxsterGirlie01

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you're going to love the sound! we had the fabspeed muffler bypass installed about a year ago on our 996 and it really sounds good! so far, it's been my favorite modification done to the car!

best wishes!