Quote:
Originally Posted by Azzkker
Part of the reason a CAI was not installed from the factory, is because the drive by noise emission requirements would have been over the DB level with the extra supercharger noise thrown into the mix. The Z/28 does not have to worry about supercharger whine.
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...I agree, the restricted air intake port on the factory air cleaner assembly plus the baffling noise reduction orrifice reduces engine noise/super charger whine to pass drive by noise regulations.