I believe it is drone. At higher RPM's it disappears into a beautiful racy sound. I don't think it is rasp from what you described. It seems like a amplification of the exhaust due to factors I don't understand inside the cabin. It almost has a pressure feeling to it in the ears. IT is similar to the "drone" I had in Mustangs past at cruising speeds. I think I might be a little more sensitive that others on the post, because I enjoy the GT aspect of this car just as much as the racing side. I just hate to consider taking off one of these awesome parts...
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2009 370Z, Had Berk HFC and un-installed them cuz too noisy!, Stillen CBE, 10mm rear wheel spacer, K&N drop in filters. Blower to come...
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