Quick question, I know there are threads about this, but I still haven't found concrete evidence about what causes the hissing sound in the VQ. I love the way it sounds, but does anybody know what really causes it?
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Stillen Gen 3 CAI / Fast Intentions HFC and CBE 12" Res. (#730) / Swift Springs / 20mm H&R Spacers / Clutch Helper Spring / UpRev Tune 322whp.
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