mau

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I finally got around in installing the greddy valve and lowering the IC to fit better behind the bumper. Now the question, anything above 15lbs of boost I hear a loud hissing coming from the valve. Also noticed at high speeds and high gears If I press the clutch pedal and let the RPM come down, the car stalls. I already tighten the spring some. Can the hissing be the valve opening at high boost? And the stalling being the reverse of it. Spring still loose?

Mau

Afrosquad

Torn diaphram?

Gjaime

I would think at 15psi you could actually hear it. Also on the pressing the clutch in, sounds like a leak to me. Check the area where you moved the intercooler some. You might have a torn hose.

If anything pressure test the pressure side.



jaime

xr4tic

Disconnect the outlet and see if it sucks air while idling. If it does, the spring is too loose.

Tighten it until it stops sucking air, then maybe tighten it a little more, and then see how it runs.

You might have to adjust it with the vacuum/boost signal line off, I'm not sure though.