GFB Respons Dual Port Variable BOV Blow Off Valve 20mm AMS EOFY 3lbs lighter then the stock

3lbs lighter then the stock crank pulley

VOLKSWAGEN

or 50/50 venting

High Durability:

Subaru STI MY96-20

GFB Respons Dual Port Variable BOV Blow Off Valve 20mm AMS EOFY 3lbs lighter then the stockRESPONS TMS: SMARTER THAN A DUAL PORT BOV! Atmosphere venting BOV won't work on your car? Try a GFB Respons; you'll be surprised! On the surface, it may look like just another dual port blow off valve, but the Respons is actually much more than that. Featuring GFB's patented venting bias adjustment system, the Respons allows you to precisely control how much air vents from each of the two outlets. Why is this so important? Two key reasons: Adjust how