Introducing the Tomioka Racing twin turbo upgrade for the Porsche 996 & 997. The turbo is utilizing the popular Garrett® GT30 ball bearing turbo with 11-blade billet compressor wheel and fully ported & polished housings. The turbo upgrade will have the quick spooling feel while increasing the overall performance across RPM range and maintaining drivability. As with all Tomioka Racing turbos, this kit comes with the lines and accessories necessary to perform the installation. One of the feature of this turbo is that wastegate springs can be interchanged to the spring rate suited to your performance needs.