Quote:
Originally Posted by BIG R  I have a 2008 LMM chevy and am averaging about 13.5 in town and 16.0 on the highway. I'm thinking about putting a performance chip in it but someone said GM can now tell starting with the 08 models that the truck was chipped. Has anyone else heard that?
Also was wondering what chip everyone is running? I had an 06 durmax before this truck and had it chipped with a Bully Dog. My performance was greart and fuel mileage was 22 mpg on the highwat at 75mph.
Any feed back would be appreciated. |
Wow that's great for a stock LMM. Welcome to the site
, I think you're right they can tell, but unless you mess something up by over doing it and try to get it fixed under warranty they probably won't mess with you.
I run EFI Live, don't really understand it yet but I know it will work great once I get the hang of it. It just takes time to learn like all things.
