Huge bolt on replacement core that is 3.5" x 11.75" x 24" dwarfing the stock core. The bar and plate core design dramatically improves...

This Bosch knock sensor is a replacement for the knock sensor that is included with the TurboXS Tuner-Pro.

Donut Gasket with 63mm/2.5 inch Inside Diameter.  This is a TurboXS designed custom gasket that is used in several of our exhaust...

Application Model Years: 2004-2006 STI,LGT,FXT,BAJA (All Side Feed Injector 2.5L Engine).  Please go to the Download Section for the to...

Donut Gasket with 76mm/3 inch Inside Diameter.  This is a TurboXS designed custom gasket that is used in several of our exhaust systems....

All 304 Stainless Steel construction with 3.5 inch double walled rolled tip and now with 3 inch piping. The FXT-RMA is a direct...

Application Model Year: 2002-2005 WRX.  Please go to the Download Section for the to the Download Section for the Instruction Manual,...

The largest and best FMIC for your 2013-15 Gencoupe!     One of the main causes of inconsistent horsepower output from your Gencoupe is...

Replacement 2 hole Gasket at the back of the W15-FP-1 (J Pipe) or Front section of the W15-FPC 78mm Hole Radius 96mm Bolt Hole Spacing...

The HKS kit mounts the blow off valve on the throttle body nicely. Stainless steel T bolt clamps and multi ply silcone used to keep a...

Application Model Year: 2006-2011 WRX / 2007+ STI/LGT/FXT/BAJA; Outside of the US: 2006+ Top Feed Injector Vehicles only.  Please go to...

The Genesis 2.0T Blow Off Valve Kit is a complete bolt on valve. Which allows you remove the factory bypass valve and replace it with our...