I don't know how much HP the InMotion Tune has brought me but I know their tuning has picked me up over 4 tenths in the 1/4 mile. Here is how it breaks down: 12.87@108 stock ECU 12.65@110 (stage 2 reflash no chip). Then a custom tune(stage 3 tuning with a chip) turned a 12.46@111.9. That's with a hugh traction problem, I know the car is good for a 12.3@113.

With those kind of gains I think it would translate to 30 to 40 HP gain. Not to menition that James is one Hell of a guy to work with (IMO).

PS My car is the fastest one out there with no pulley change, MB or Xfire. This info. based on Dragtimes.com