Let me chime in on this. I had been monitoring my car with Torque Pro. Had a spot on the turnpike on ramp where I was real consistent on max horsepower (calculated at the wheels). After my tune the test strip was actually reading a little less horse power. Doing other runs in area's though I did find I was actually peaking out with a plus 11HP. Unfortunately wasn't logging Torque. Seat of the pants says whatever they did shifted the max HP range, and has given it an overall sportier feel. Adding the 74mm throttle body, tune, and opening up the intake restrictions definitely makes this car more fun to drive.