I really broke my car in easy, like not going over 3500K for the first 2K of driving, so I guess it really took sometime for it (the motor) to break in. I also added a bottle of additive to the oil change for the first 30K of driving, like (3) bottles worth, so that too may have played a factor into why it took so long. All I know is that on the Mustang Dyno, where the hp #'s are always lower, I pulled the best hp # I've ever pulled
