[s-cars] Boost quest

[CaptMagu at aol.com]

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Rich

The flutter issue sounds to me like your bypass valve. Your charge air
pressure is much higher downstream of your throttle body. You are overcoming
the spring compression of the valve and it is siphonong of your boost. This
flutter you describe is indicative of this problem. The system sort of burps
through the BPV. Solutions vary but the best that I have found is the reverse
plumbing of a larger BPV. This will eliminate the fight between the charge
air pressure and the valve spring. As always YMMV. HTH.

Hap, no flutterin in Everboost, Maguire