Over the last year Dale has put in extensive dyno time, and street testing on his new engine combo as well as updating the ignition ECU. The Holeshot ECU Re Flash modifies the ignition timing a touch in areas of the rpm curve where needed, which produces more torque, top end power, as well as smooth it out a bit . Dale also raised the rev limit so it hits a touch before 11K on the tach. It also will not change your fueling or current tune up. When you go to our stage two tune up and full header system, the motor responds pretty well above 6K with the Holeshot ECU re flash update. You wont see to much on the dyno, but seat of the pants .............. absolutely.