well mr king of bikes, I have a tial QRJ on mine and it is quiet as soon as you press the gas pedal from idle (while in gear). Let off the throttle and it dumps immediately very loudly and gets quieter as the RPM lowers as you would expect. I get very light fluttering while cruising around 2k to 3k rpm, not accelerating or decelerating.... doesn't effect driveability, just something you can barely hear with the windows down. I can't remember the spring on mine, I just bought what TopGunZ told me to get. I am no expert but if your boost is exhausting while in throttle I would think your spring is too strong and is requiring more boost pressure at lower RPM to shut. Or something is installed wrong. Maybe let the guys know what BPV / BOV your using and someone could shed some light on it.
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Vortech SC|Stillen Sway Bars+Facia+Skirts+CB Exhaust|Z1 Clutch+CSC Elimination Kit|ACT LW Flywheel|Tein Coils+EDFC|SPL Camber Arms|RJM Clutch Pedal|TWM Short Shifter|Morimoto Switchback LED's|Z1 34 Row Oil Cooler|AIR 2 AIR|E85 Flex Fuel|460 whp TheBoostCreep
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