Tial Blow Off Valve Spring Black for BV 50mm or QBOV

The BV50 and the Q/QR use the same springs. The spring is a bit more compressed in the BV50 which is why the spring rating is one PSI higher. The supercharger spring is specifically for supercharged cars only. If you have a quick spooling turbo it can actually push the valve open briefly before the charge gets to the maniforld; dumping boost.TiAL BOV's need a 1/4" inner diameter DIRECT source to the manifold. Smaller lines and T's can cause delays in response time.

 

SPRING PRESSURES HAVE NOTHING TO DO WITH BOOST; ONLY VACUUM

 

Specs:

 

Pressure: -6.00 PSI - Q Bov - Black Spring

Pressure: -7.00 PSI - BV 50mm - Black Spring