check engine light
Safety Car
Joined: Jun 2002
Posts: 4,770
Likes: 2,515
From: Buckeye, AZ
St. Jude Donor '12-'13
Race Director
Joined: Sep 2013
Posts: 11,825
Likes: 2,479
From: Ft Lauderdale
Tech Contributor
my experience is anything that you try and reset and turn off with the OBD scanner, if the problem isn’t solved, the MIL light will come back on.
The tech department at the exhaust manufacturer will probably have the answer for you as to what needs to be reprogrammed, or reset in the ECU.
The tech department at the exhaust manufacturer will probably have the answer for you as to what needs to be reprogrammed, or reset in the ECU.
Pro
Joined: Sep 2000
Posts: 679
Likes: 310
From: McKinney Texas
Probably need to do the AFM valve relearn, and possibly the NPP relearn if you have that option.
I would check the codes first and see what it says.
A dealership can do this or there are cheap two-way scanners to allow you to do it yourself.
I have the Creader Elite that did the job and a lot of other things that I picked up for $79 on sale. (I think a dealership charges $100)
Here is a thread with links to the tools: Exhaust Relearn Tool - CorvetteForum - Chevrolet Corvette Forum Discussion
I would check the codes first and see what it says.
A dealership can do this or there are cheap two-way scanners to allow you to do it yourself.
I have the Creader Elite that did the job and a lot of other things that I picked up for $79 on sale. (I think a dealership charges $100)
Here is a thread with links to the tools: Exhaust Relearn Tool - CorvetteForum - Chevrolet Corvette Forum Discussion
Race Director
Joined: Jan 2014
Posts: 10,709
Likes: 7,102
From: Fulshear, TX
More than likely this is an AFM/NPP valve relearn issue. C8s do not require tunes for catback exhausts or headers. If OP installed aftermarket cats, there are typically workarounds for that, as well.
Race Director
Joined: Jan 2014
Posts: 10,709
Likes: 7,102
From: Fulshear, TX
Depends which exhaust you had installed... Catback system alone? Cats? Does it have AFM/NPP valves? Did your car come from the factory with the optional NPP exhaust? Give us the details and we'll get you all sorted out.
