Invidia Subaru WRX and STi Bell Mouth Downpipe. Invidia's all new downpipe is a great way to start adding Horse Power and Torque gains. This system was tested in turbo magazine. When combined with the cat-back section, HP gains were seen up to 60+ at the wheels with engine managment. The downpipe is constucted of 304 stainless steel with a large bellmouth will ensure longevity while enhancing power by freeing wastegate gaskets. 3in" mandrel bent and bolts up to any catback or stock unit.
Only one O2 bung. If you need two, purchase part number HS02SW1DPO.
Quality work from the Invidia team. Great welds. Loud turbo sounds. Great fitment. Increase in power. What else could you want?
Replaced a cheap ebay downpipe with this invidia. Fit and finish were excellent! Perfect fit on the bugeye, comes very close to a/c drain hose though, minor issue. Mated up with mad dad 3" cat back, fit very well though the new gasket from downpipe to mid pipe leaks a little, may need a thicker option.
if your looking for some gains and a loud smooth rumble id look into getting this with an invidia catback to complete it.
super easy install and would recommend.
The downpipe was perfect the welds look amazing no scratches or dents nicely packaged, and nice new hardware and downpipe to mid pipe gasket.
Item was bought to replace my TurboXS catless Downpipe that after 13 years was all rusted. The fitment was good and no mods were require to connect that to my Greddy Catback