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downpipe question

0

06grandprix93

New member
Could a catted zzp downpipe possibly set a check engine light in my 06 GP? I've heard that it could set a cat inefficiency code or failed o2 sensor in 04+ GP. Will i need an o2 extension or anything to prevent the ses light from comin on?
 


if you keep a cat on the car then more than likely youll be fine. even then if it does you can get a defouler and thatd make it work.
 
I installed a ZZP catted DP on my 03 when my only other mod was an intake.
There were no CEL's set. Sometimes when my CEL is set off after a mod, it will disappear after starting and driving it a few times.
 
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