Tial QR Recirculating Blow Off Valve w/ 25.4mm (1") Recirculation Port 12 psi Purple | 004034 Vehicle Model_Optima The 3" exhaust tubing is

The 3" exhaust tubing is mandrel-bent and then TIG-welded

With a durable black texture powder coated finish

Add this OLM STI Style Paint Matched spoiler and you’ll definitely turn some heads on your way to work or the next car meet

Crawford Performance Single Chamber Air Oil Separator (V2) for Subaru 2015-2021 STI with Rotated Turbo FMIC

Will add some NVH (noise

Tial QR Recirculating Blow Off Valve w/ 25.4mm (1") Recirculation Port 12 psi Purple | 004034 Vehicle Model_Optima The 3" exhaust tubing isQR is the recirculating valve based on the TiAL high performance Q. Outline interchangeable with the Q and original BV50. It's Offered with a variety of springs for difference vacuum levels, and a special spring for supercharged vehicles. Customizable outlet ports offer flexibility to integrate into custom & existing applications. Included with every Tial QR: QR Assembly TiAL Vband Clamp Vband Weld Flange TiAL Air Fitting High Pressure O ring Return