if i got to bring my truck to the shop can i restore it to factory and will they be able to notice? Also is it a hard install on my 09 sierra 1500 5.3 i see on this forum they have a lot of ppl having trouble finding thier trucks on the tuner. last question if i would go with the predator could i ...

hey i got an 09 sierra z71 with a 5.3 i have a kn cold air intake system, flow master super 10 pipe, and a leveling kit with 33"s. I was looking for a programmer to help gain hp or mpg any suggestions.