i have berk hfc w/ stock exhaust and it def makes a big difference, took it to a shop to install it. took awhile for them to install since stock cat bolts were stripped off
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KWV3/Eibach/StillenG3/FI CBE+LTH+34Row/Uprev/SPL/SouthBendSS/QuaifeLSD/4.08/TommyKaira/Status/VolkZE40/AP Radical BBK/Seibon/Amuse/VIS/Sparco/WorksBellGTC/RJM/Nismo
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