COBB AccessPORT is the industry leading OEM ECU flashing, managing and monitoring assistant for Nissan GTR. Unlock power hidden within the ECU by replacing conservative factory settings with more aggressive calibrations. The result is impressive gains in torque and horsepower while maintaining a high degree of safety. The AccessPORT comes with pre-installed maps that are optimized for common performance modifications. Achieve up to 50hp gain with completely stock car and even more with just modified exhaust.