Quote:
Originally Posted by KillboyPowerhead
J-pipes do a great job of eliminating drone. I had a custom cat-back installed consisting of a "resonated x-pipe" by Magnaflow (part 11386) and then 2.5" pipe back (removed factory resonators and mufflers) and it droned a fair bit around 1700 - 2200 RPM or so, so I had j-pipes from Solo Performance added and the drone is almost gone, just a little bit around 1700 RPM, and even then it's much quieter. Solo Performance j-pipes are adjustable in length so you can "tune" them to find the right length to remove drone.
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thank you, it's difficult to find a solo j pipe here in Beijing, because there're no official solo dealers in China. thanks any way i'll try to locate some used solo exhaust system, maybe i can find an axle-back by luck ~