STi/WRX Turbocharger Install Kit

It supports a broad spectrum of turbochargers, from 49 lb/min 50 Trim units to larger 75 lb/min turbos capable of achieving 750 wheel horsepower. This comprehensive kit includes custom-made components essential for boosting power significantly. The WS-RM-BASIC portion of the kit features a unique externally gated uppipe that connects to the stock header and is flanged for a TiAL 44mm external wastegate (sold separately), a wastegate dump tube, an uppipe adapter pipe to rotate the turbocharger, and a downpipe designed to mate with the TurboXS Downpipe. It also supplies all gaskets, hardware, and oil and coolant lines for both STi and WRX applications. Additional components include the WS-RM-PIPE kit with intercooler pipes, silicone hoses, and stainless steel T-bolt clamps, as well as a MAF relocation kit for improved idle and low-load drivability. The WS-FMIC includes a large bar and plate intercooler core with 2.5” diameter mandrel-bent aluminum pipes and all necessary couplers and clamps. The WS-RM-INTAKE provides the intake pipe, filter, and PCV/EVAP lines. Turbochargers and a TiAl 44mm wastegate are sold separately. Compatible turbochargers include Garrett GT30 and GT35, AGP Turbo HP61 and HP66 with T04S Housing, AGP Turbo 50 Trim (requires an accessory pack), and other hybrid T3/T4 turbos with similar housings. This kit assumes that supporting modifications such as engine management, 800cc injectors, and a 255 LPH Walbro fuel pump have already been completed. It is specifically designed for the 2002-2007 Subaru Impreza WRX (including WRX Limited and WRX TR) and the 2004-2007 Subaru Impreza WRX STI (including WRX STI Limited), all with the H4 2.5T engine.