8.1 chevy

[rmeade24]

I have a 2004 Chevy avalanche 2500 with 8.1 can any one suggest a good all around tune?

[garrett]

you will have to choose the correct tune for the gas octane you are using. If you use premium, 91+ octane, select the performance, if you use 87, use the 87 octane tune.

[rmeade24]

Thanks garret I guess I need to be more specific. I have the 87 tune in but transmission shifts so hard it snaps your neck. there are also settings for fuel, timing, and so on , has anyone set all of these settings and found a good tune.

[Mike_Levy]

What works for somebody else won't work for you. All motors are different, all locations and gas are different and they will all affect the tune. Thats something you need to learn to tweak yourself, or have a CMR dealer make you a custom tune for your particular motor, location and gas.

[rmeade24]

Thanks for the information Mike.