the setting allows you to adjust the pressure difference that operates the valve. when the throttle is opened the pressure in the pipe and manifold equalizes and the valve shuts no matter the setting (unless something is really wrong). it isn't a wastegate so it doesn't control pressure it simply dumps it whenever the manifold pressure is something like 7psi lower than the pressure in the pipe. for more info on it reference the pokeyl thread missing boost(it's also very rare but if you have the same issue with temps he does maybe it's an issue with the compressor? just another thing to check i guess)
Edit: i said to have them check the valve because if you got dirt or something in it and it scuffed the bore it bit maybe its sticking but if youre building boost at all it should be closed. most likely a coupler moved or loosened up on you.
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Last edited by 1slow370; 08-26-2013 at 12:18 AM.
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