Question about CEL's after exhaust install... [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Question about CEL's after exhaust install...


Mad Maxx
07-10-2007, 09:01 PM
I might be beating the horse with this one, but I don't think I will be....

I have an '07 Classic LBZ with the FE9 emissions...I got the Corsa Cat-Back installed today and absolutely LOVE IT!!

I am still running the Stock DownPipe because Corsa doesn't have one out for the '06+ yet.

My question is....Since I have the Cat-Back installed and I'm NOT getting a CEL, if I put in the DownPipe when they come out with one, do you think will I get a CEL??

I am not blocked or fingered either (that just sounds toooo wierd).

Unit453
07-10-2007, 09:08 PM
Tough to say...Some get'em and some dont....None of these trucks seem to be the same...

Mad Maxx
07-10-2007, 09:22 PM
Tough to say...Some get'em and some dont....None of these trucks seem to be the same...


Yea, that's pretty much what I was thinking...I am still having trouble with my Intake...the truck just won't learn it and get rid of the CEL for it.

Unit453
07-10-2007, 09:31 PM
Thats exactly the reason why mine's staying stock. The day that an aftermarket intake company shows real results (AKA a dyno), where an intake improved h.p., filtering capability, and mileage gains, is the day, I'll get one.