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You can pretty much guarantee that the cause of the raspy is the HFCs. This is why I will not put them on mine, raspy is a fear I have.
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Join Date: Feb 2009
Location: Lex
Posts: 96
Drives: 09 370Z, 02 WRX
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You can pretty much guarantee that the cause of the raspy is the HFCs. This is why I will not put them on mine, raspy is a fear I have. And the intakes probably are the hiss sound you hear, they do make the intake more audible which can have a hiss sound even when letting off the gas
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