So far, the best chip I have used is the Thrasher. I have a late model Pit Bull (low timing), Joe Lubrant and the Thrasher. The Pit Bull is good, the JL gives me knock at 12psi boost and on shifts and the Thrasher lets me run 25psi boost with 0.0 knock all thru the 1320. The Thrasher gives me the best idle the car has ever had and probably the best throttle response out of the 3 hotairs I have.