 DASC Tune-up
Did you know you can adjust the bypass valve?
There is a adjustment screw on there and mine was off a few turns not letting the valve close completely so boost was leaking back and looping through the SC. Also I found if you put the vacuum line from the bypass valve to the boost port nipple instead of the TB vaccum port the boost pressure helps to press the flap close tighter.
Just a few FYI's if your a little light on boost. It doesn't cost anything to check that adjustment. | 
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