Description: Bring out the TRUE potential of your Duramax with custom calibrated tunes from Motor Ops.
Included Power Levels
Refined Stock - For those times when you're just driving, and want a...More Details »
Description: The PPEI EFILive Allison TCM Tuning is a major benefit to all users regardless of their modifications. The TCM Tuning comes with an earlier lock-up strategy that ultimately allows for the truck to...More Details »