I have the ART pipes and FI CBE with 12" resonators. While cruising, cabin noise is normal, on the throttle it does get louder. I'm happy with mine. Huck here on the forum has the LTH + CBE from FI and is louder than mine. He used dynomat on the inside and made a world of difference. So that's an option if you feel it is too loud when you get yours.
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