Chevy and GMC Duramax Diesel Forum - View Single Post

BIG R · 07-09-2008, 01:20 PM

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.

07-09-2008, 01:20 PM	eBay Motors #182 (permalink)
BIG R Junior Member Join Date: Jul 2008 Posts: 7	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.