Invidia HS08SW1DPO 08+ Subaru WRX/STi Legacy Extra 02 Bung Downpipe

If you’re looking for an off-road downpipe that will add substantial horsepower, then have a look at this Invidia downpipe. This one features a divorced wastegate and has 2 bung provisions for your O2 sensor, as well as an accessory such as a wideband gauge. 

This downpipe is constructed from 304 stainless steel 3” tubing. This design will allow the downpipe to mate up to most aftermarket cat-back exhaust systems.  Please note that a tune is required to run an aftermarket downpipe. Please consult with an experienced tuner, or use a provided map available on an OTS (off the shelf) tuning device.