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Old 08-18-2009, 09:41 PM   #4 (permalink)
AH370Z
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Location: Australia - Sydney
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Drives: 11' 370z, 13' E92 M3
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However, at cruising speed (on the highway) there is unfortunately some drone. It is not too much, and it is most noticeable between 2.5K and 3K RPMs.
Tony, do you think this i due to the HFC. I'm not looking at getting the HFC and still going with the 18" resonators, As I want it quiet in the cabin

Thanks
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