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tgeny79 · 02-10-2006, 04:19 PM

This is called wastegate flutter. It is not surge. Your BOV prevents surge when you let off the gas. The waste gate is what actually controlls boost. It is very common to hear it open and shut at partial throttle. You won't hear it at WOT as it is closed and building boost.

02-10-2006, 04:19 PM	#12 (permalink)
tgeny79 SRO Mentor Join Date: Apr 2002 Location: Portland, OR Posts: 37	Wastegate flutter This is called wastegate flutter. It is not surge. Your BOV prevents surge when you let off the gas. The waste gate is what actually controlls boost. It is very common to hear it open and shut at partial throttle. You won't hear it at WOT as it is closed and building boost.