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ltr_akrapovic
09-08-2009, 03:05 PM
how to reduce the dB

to pass the test 99db with a curtis sparks
deathman53
09-21-2009, 06:25 PM
get a quiet core, also a universal spark arrestor maybe. I had a loud cobra pipe and the spark arrestor quieted it down alot, it seamed like it make more power too.
tommygunnz
11-23-2009, 04:09 PM
do you know what its currently at?