APR’s Calibration Engineers spent months calibrating the engine management system, including many hours of chassis dyno development. With a thorough understanding of the ECU’s torque structure, APR’s Calibration Engineers properly increased engine load to produce more power and torque across the entire power band. APR’s ECU Upgrade increases boost pressure, optimizes ignition timing, cam timing, lambda and more to produce higher output!

The APR Stage I ECU Upgrade gives you higher peak numbers of 667 HP/697 FT-LBS on 93 (R+M)/2 octane and up to 692 HP/713 FT-LBS on 100 (R+M)/2 octane race fuel. As much as +171 HP and +191 FT-LBS of torque are available through the power band!