The Proport by Turbosmart is a new 54mm (2.13in) blow off valve with a tiny footprint and massive flow.
Flowing 420 cfm, the Proport is sufficient for 3500 hp and stands 30mm (1.2in) lower than Powerport while flowing over 25% more than the market-leading 50mm Raceport.
Features include a unique locking collar design, a new unique vent profile, a sensor cap option, and spring options for all turbocharged and supercharged applications.
The Proport resulted from over 25 years of blow off valve manufacturing experience and 12 months of internal development.
The design is CFD driven and validated in real-world conditions for maximum possible flow based on the demands of the tuning and motorsport market.
The mil-spec diaphragm operated valve is highly responsive while using the boost-balance system, meaning the more boost you feed it, the better it seals.
Available with an onboard position sensor as an option, it utilizes a non-contact Hall effect sensor for valve position, which means no through-holes in the cap, ensuring no chance of leaks.
The data this can provide for professional and amateur teams alike is invaluable when every pass and every minute on track counts.
The quick-release V-band system is of the quality expected from Turbosmart, as the GenV cap profile is easily distinguishable and includes 2 x 1/8 NPT reference ports on a cap that can be rotated for simplifying reference hose runs in complex engine bays.
