It's pretty easy to make a make a catless downpipe that makes power.  It's much harder to make a downpipe with a catalytic converter yet...

TurboXS 2015-19 Subaru STi Front Mount Intercooler Kit  One of the biggest keys to making consistent power in a 2015+ STi is managing the...

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...

Replacement Bosch VW Oxygen sensor for TurboXS Tuner-VW (Bosch Connector pictured)?

To unleash the full potential of your Gencoupe's 2.0T Theta powerplant, you need to do two simple things: Let it breathe in easier and...

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

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...

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 2010-2012 Gencoupe!    Why do you need this: One of the main causes of inconsistent horsepower output...

TurboXS RFL Catback Exhaust for the Cobalt SS TC is just that "Really Fuckin' Loud".  As with anything we put our "RFL" tag on, this part...

TurboXS introduces the 2008 WRX and STI Cold Air Intake. As rule of thumb on a turbocharged vehicle you will want to free up the flow...