Thanks for the advice. I just spoke with a tech from EDGE and was told that the tuners don't fix the code but just resets it. If I want to get rid of the code then I would have to buy a programmer to have the computer to shut off the part that monitors for the cat. So, I decided to get a cat...
All,
I have a 2007 GMC 2500 with the LBZ motor. I bought a magnaflow exhaust and an air raid for my upgrades but I've heard that when I put the exhaust on I will get a "check engine" light until I use a programmer to trick the computer. First of all, IS THIS TRUE and second, which programmer...