This kit comes with tuning. FR sports car "86 & BRZ" was launched in tremendous popularity of ecologically-friendly cars. HKS has been released various tuning parts for "86 & BRZ." Among HKS' 86 & BRZ parts, the supercharger kit has been redesigned. The efficiency improved by layout change of piping around the throttle and utilizing a bigger size intercooler. Compared to stock, 35% higher output and 45% higher torque are achieved. Fuel Upgrade Kit for higher engine output is available for engine output of over 300PS.For the owners of the conventional Supercharger kit, Intercooler Upgrade Kit is available to convert the existing kit to new version. Using the stock air cleaner enables sound isolation of the supercharger; the quietness is dramatically improved. Each HKS GT2 Supercharger System is a vehicle-specific design. All parts necessary for installation are included.