Hey guys i have a 04.5 rc/lb lly with S&B intake and 4in MBRP front pipe back exhaust and im trying to tune with HP Tuners, here is my problem, ive had a guy helping me with my tunes, and every one has had the same problem, usually right around 55mph and decent throttle the truck goes into some sort of limp mode or reduced power mode (with no MIL), the first tune on the truck took about a day for it to happen then it started happening every time i drove the truck, ive even taken the truck to the dealership and paid to have the stock tune put on and retry tuneing (the stock tune never has this problem)
So i want to do two
1) find the problem weather it is in the tune or the truck, does anybody have an idea
2) i want to start over on a tune and do this by myself, where do i need to start, how much can i change with this 5speed allison, what tables to i touch and what do i not touch?
So i want to do two
1) find the problem weather it is in the tune or the truck, does anybody have an idea
2) i want to start over on a tune and do this by myself, where do i need to start, how much can i change with this 5speed allison, what tables to i touch and what do i not touch?