I have an 07 LMM with less than 50k and i was wondering if i took the muffler off and just put a cat back system on it will it void my warranty:drink
The dealer can check back in the ecm to see the last 10 (i believe ) times it was programmed.I am a newbee here and I just bought an 07.5 Chevy 2500HD DMAX and I am wondering about the Diablo Predator Programmer. Is it a good purchase for the $$'s if I'm not looking to go nuts?? Also, if you plug in a programmer and reset it back to factory before bringing it in for warranty, can the dealer tell it was programmed??