Sprint booster is the first and leading Product in the industry to improve throttle response by reprogramming the acceleration signals. At low revs, the engine responds at approximately half the time in comparison to before. The delay time whilst accelerating in 3RD and 4TH gear and the engine in the mid-range, is almost zero. Big differences in the higher REV range. Improved response for downshifts and safer overtaking. Overall safety and more fun on the road! Sprint booster has successfully passed the TUV tests and it is certified with European conformity Type approval (EC Type approval mark No E24031712). Sprint booster comes with 3 acceleration modes ( off/ Sport/ Race ). I addition offers the “pedal lock” Mode for security and the valet Mode for reduce the vehicle's performance (power and torque).