Supercharging is the most reliable and affordable way to add a substantial amount of power to your 944S2.You can easily add 100 horsepower with the SFR S2 supercharger system.We use an ATI Porcharger C2 head unit with custom designed mounting brackets so that this is a true bolt-on system.There is no need to tap oil lines because the supercharger is self contained.We use a Spearco intercooler rated at 600whp to help combat intake temperatures from soaring to dangerous levels. It also adds reliable horsepower since it will lower the charge air temp over 100 degrees! Boost will now be set at 7 psi. Adding an intercooler increases the reliability and performance of this supercharger system which ultimately leads to years of trouble free operation . we have recently revamped system to retain the factory AC system. So now you can have the power and be cool while doing it!