I have been noticing what sounds like an hissing / swirling air noise while accelrating around 1800RPM or so. Anything below that or about 2000RPM and nothing.
Anyone else expirence this or know what it may be? I've already checked the exterior connections to the intake.
Vehicle is 100% stock, no mods.
Thanks!
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 2008 H2 Graystone Metallic
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