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Old 09-17-2008, 05:58 PM   #5 (permalink)
EcoModding Apprentice
Join Date: Sep 2008
Location: Australia
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I agree that it is mainly for WOT and boy does it make a difference from 4,400 upward in my car but, if induction noise is any indication low revs with any more than say 1/4 throttle ie. hills it has to help to a degree.
My engine is a small high performance 4 cylinder. YMMV
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