Tomioka Racing GTX2971 Twin Scroll Turbocharger WRX 2002-2007 / STI 2004-2021 / Forester XT 2005-2007 FX35_2003-2008 The stock cores on the

The stock cores on the car are very good for stock power

Part: # MMOC-EVO-01BK

The bolt holes are made from a technique called "thread forming" which is superior to the typical cutting tap that others use

Part: # MMINT-GEN4-10SL

Tomioka Racing GTX2971 Twin Scroll Turbocharger WRX 2002-2007 / STI 2004-2021 / Forester XT 2005-2007 FX35_2003-2008 The stock cores on thePart #: TR TS1047 Introducing the twin scroll GTX2971 for Subaru 02 07 WRX and 04 18 STi! Just like the GTX2971R,this twin scroll edition features a ball bearing cartridge, billet compressor wheel , and 10cm2 housing. Thanks to the billet compressor wheel the overall weight of the wheel is lighter than competing turbochargers and allows for maximum airflow throughout the unit with the help of point milling on each blade. A unique wheel and blade