Question about tial BOV

[GSXRJJordan]

The BOV closes as soon as you get back on the throttle... lots of time on the net you'll have people that run through a gear and just hit neutral, which will keep the BOV open.

When you run through a gear and "power shift", you're getting back on the gas quickly, which closes the valve (and opens the throttle body, so even if the valve was still open, it's not blowing off).

You don't choose your spring based off idle per se, you choose based on target boost pressure and adjust if your idle is off.

[Sil-Eighty SE-K]

well to aswer your original question that is normal and shouldnt be leaking.... you would most likely hear it if it was leaking when u boost and you prolly wouldnt be able to make full boost either..... that red rubber is part of the diaphragm not a "seal" so to speak. In a way it is a seal but its not the part that seals in the valve shut...its seals off the diaphragm..... hope that helps..... also the springs are rated by your vacuum level (when idle) seeing as how it uses the spring to create the difference between the boost in the pipe and the vacuum in the diapragm when the throttle plate is shut..... at 10-14 psi on the T25 i run the 7-10psi spring