2007 Cummins ISX
Right after it was installed, there was an immediate change in the engine performance – less downshifting, less smoke and overall more power. I had to relearn how to drive it with the extra power and my first tank went from 6.87 to 7.41. Even if there was no mileage gain, I had no plans on returning this before the 90 days just for the performance that was gained. Lunch for the AirDog team is on me!
Charlie L.
Shakopee, MN
