BOV Kompact PlumBack - Shortie - Ford Fiesta 1.6L EcoBoostThis little blow off valve might look small, but it's anything but light on performance. With its billet aluminium construction and a lightweight brass aluminium two piece piston, perfectly matched with precision engineered springs, the Shortie provides razor sharp boost response and significantly more significant boost handling abilities up to a massive 30PSI. The Plumb Back is a fully recirculating BOV, so its operation is quiet and won't draw any