Hi I recently purchased an 06 duramax with the lly engine. Its bone stock. I wanna take the mpg's up because I'm tired of drivin my 05 with the 6.0 vortec @ 11 mpg. That being said I need advice on duramax stuff. Programmers... What do I need to know? I'm not worried about hp cuz the engine and...

hey there im a newbie but i just bought a 2001 lb7 duramax and its completely stock with 121k miles on it and 10" of lift and 37" tires ;). anyways i was wondering what is the best chip for it. i would like for it to be able to smoke and have a nice power gain without messing up the truck or...