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 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...

Not too loud and not too quiet, the WS02-XS-HYB from TurboXS is the valve for you if you want an upgraded Blow Off Valve that you can...

Not too loud and not too quiet, the W15-XS-HYB from TurboXS is the valve for you if you want an upgraded Blow Off Valve that you can hear...

The JUKE-XS-RFL is the blow off valve of choice for the Nissan Juke owner looking for the loudest blow off valve available on the...

The TurboXS 2019+ Hyundai Veloster Turbo Hybrid Blow Off Valve is our newest blow valve and is designed specifically to replace the stock...