Function Fab VB WRX J-Pipe - Catless or GESI Catted

Function Fab designs, TIG welds and inspects this J-pipe in-house for the VB WRX, using 304 stainless steel and a laser-cut turbo flange, with attention to turbo flange fitment, routing and clearance, factory mounting points and O2 sensor placement. It is offered catless, intended for track, competition and off-road use where a catalytic converter is not required, or with an integrated G-Sport GESI catalytic converter. The range covers the catless version at the low end and the GESI version at the high end. A catless pipe is not legal for street use in most of the US.