Im looking into getting exhaust put on my 2.2 LS. So my Dad talked to one of his friends who works in the maintenance dept. at Nash Chevrolet in Ga who told him that i should only get the GMPP exhaust because any other exhaust would not maintain the proper backpressure and would cause the CEL to stay on. Is this a load or does it hold truth?

 

its a load

 

Is it even possible to get a cel from the exhaust?

 

complete load, i put dual magnaflow and no cel

 

yup, BS

 

I grew up about 5 min. from Nash Chevrolet and my Mom has purchased 3 cars from them. I also worked at the Pontiac dealership on HWY 316 and Collins Hill road. From what I have heard about that dealership, I would not trust a word they say.

 

yeaaaa BS... just tryin to make a sale

 

BS. No matter what you do to these cobalts you're going to get a cel. There are already a couple of threads on here with guys who just have GMPP done and they have CELS. WTF

 

I still have yet to hear from someone putting an exhaust system on their car and it throwing a CEL...I haven't gotten one yet myself either, even with my intake.

 

Awesome thanks for the replies. You pretty much confirmed my beliefs concerning the cel.

 

Drive down to Jonesboro and go to Bill Heard Chevrolet... thats the only one in the ATL area i trust lol

 

The link to the guy with just the GMPP exhaust throwing a CEL is right here, I ain't lie'in
https://www.cobaltss.net/forums/show...ht=cel+exhaust

 

I get a p0240 or something about Cat not operating in tolerances or something and a p017_? or something about lean in bank 1 i have the Injen CAI and pacesetter header to 3" magnaflow carsound cat and then 2.5 the rest of the way back to the magnaflow muffler.

 

that sounds completely cat related to me...nothing to do with the exhaust

I have an intake and exhaust setup and no cel on my Ion either

after some research on j-body.org there are only a select few high flow cats you can purchase for your 2.2, the rest will throw a code.

not to mention the link to the thread posted above is for an SS/SC, those cars will throw a CEL if you sit in them the wrong way
2.2's are much better accepting to mods

 

Not to mention the guy said he had around 2,000 miles with that exhaust installed...