Ford Racing Performance Products - 2005-2010 Mustang GT - Ford Racing 85mm Cold Air Kit More Power. Replace your restrictive stock intake with a Ford Racing CAI for more power and better acceleration. The Ford Racing GT Cold Air Intake Kit with its 85mm mass air meter and custom tune will increase your GT Mustangs power by up to 20 rwhp. Fitment. This Ford Racing Cold Air Intake is designed to fit the 2005-2009 GT Mustangs and includes a 85mm mass air meter and a voucher for a Pro-Cal Flash tool with an official Ford Racing calibrated tune. Technical Note. Product Registration is required to receive the Pro-Cal flash tool used to recalibrate the vehicles PCM. Operating the engine without the PCM recalibration will result in engine damage or failure.