18" resonators. It's still pretty loud with the 18s at the lower RPMs. Between 1 and 3K RPM it has a really deep sound to it, especially when you're working your way through the gears from a stand still. Once your at a steady speed, it's really quiet. My goal was to keep it as quiet as possible. It's a little louder than I expected but it is also supposed to quiet down by about 20% as it breaks in.
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2011 Brilliant Silver Touring/Sport/Nav/6MT --- Build Journal
F.I. SS 18" CBE | Takeda CAI | Z1 25-Row Oil Cooler | Swift Springs | Hotchkis Sway Bars | H&R 15mm DRS Spacers F&R | RJM Clutch Pedal | UpRev Tune
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