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I've got the Borla, headers, and used to have Fabspeed bypass pipes. It was hard to tell if there was any drone...it was that loud! At WOT, It was over 98dB @ 50 ft, the SCCA autocross noise limit. I have since added 100 cell cats to the bypass pipes, and am now SCCA legal. Drone? Hard to say because it is still very loud.
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Rennzenn
Jfro@rennzenn.com
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