Stumbled across this forum while researching upgrades for my truck. I own a diesel shop and have been playing with diesel performance upgrades for years. With all the epa crackdowns on diesel performance i decided to get away from the new ones. Still have my compound turbo fully built lb7 duramax. They cant harrass me for that one. So I recently sold my 19 Denali 2500 and bought a 22 black zr2. I was curious if anyone on here had any personal experiences with a Whipple on our trucks?