What will make it sound better when standing around the hood? Right now it sounds like a sewing machine with just K&N filters. Also... whats the maintenance on the filter? I haven't touched it since they were put on..
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Pearl White 2010 370Z Sport, Stillen CBE, tint, K&N drop-in filters, GT-R start button, Kenwood DNX-6980 with backup cam, LED bulbs, Raceseng shift knob.
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