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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
For what is is worth and to clarify -- the figures posted earlier are more correct with how a Tial style BOV functions that one might use with an EFI conversion where it vents to atmosphere.

The 930's stock boost valve and the aftermarket piston style BOV's we would typically use on conversion with CIS would operate differently than the figures suggest.

The piston face would not be orientated to face and push against the boost pressure.

Instead it would act as a valve that closes with the piston crossing the boost relief path.


Last edited by 911st; 12-22-2010 at 07:02 AM..
Old 12-22-2010, 06:53 AM
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