Too funny, Goran.
Here's my far fetched theory. I think the turbocharger being used is being used is going in and out of surge threshold. The BOV is just responding to what it sees in the pressure system. BTW, where in the intake system is the control pressure for the BOV being monitored? Above or below the throttle plate? If above the throttle plate....how far from it?
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Dave
'85 930 Factory Special Wishes Flachbau
Werk I Zuffenhausen 3.3l/330BHP Engine with Sonderwunsch Cams, FabSpeed Headers, Kokeln IC, Twin Plugged Electromotive Crankfire, Tial Wastegate(0.8 Bar), K27 Hybrid Turbo, Ruf Twin-tip Muffler, Fikse FM-5's 8&10x17, 8:41 R&P
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