Tomioka Racing Billet TD05-18G Turbocharger

The Tomioka Racing Billet TD05-18G turbocharger provides a performance upgrade for 2002-2007 Subaru WRX and 2004-2021 Subaru STI models. The kit includes the turbocharger, wastegate actuator, gaskets, oil pipe, water pipe, and necessary hardware for installation. The turbocharger utilizes an 8cm turbine housing and features a standard Subaru 5-bolt flange. The billet compressor wheel measures 52.5mm at the inducer and 68mm at the exducer, while the turbine wheel is sized at 56mm by 49.2mm. Users can choose between a 1.1 bar or 1.3 bar wastegate actuator spring to suit their specific boost target requirements, with the 1.1 bar spring recommended for mid-teens boost maps and the 1.3 bar spring for targets consistently above 19 psi. Professional tuning is required for proper operation and to ensure engine safety. Additionally, proper boost control strategy is necessary, as boost levels are limited by individual engine components, fuel quality, and cooling efficiency. This product is intended for the specific Subaru vehicle applications listed; ensure your build meets the necessary mechanical requirements before installation.