Using COBB AccessPORT, we are able to optimize your fuel and timing curves to extract as much safe, usable horsepower and torque as possible for your GT-R. We are also able to raise the fuel cut on the factory ECU for those pushing the limits on the factory hardware. In addition to this, we will tweak your cam timing on both your intake an exhaust cams for quicker spool-up and maximum power without sacrificing driveability.