Thread: dump valve or no dump valve
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Old Apr 10, 2009 | 06:43 PM
  #14  
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SillyFezzaMk1
Rubber Rhino Crew
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the noise comes from the air whistling back past the compressor wheel when your intercooler, plenum etc.. are full of air on closed throttle....this is the air normally released with a dv.

Dan
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