I've dealt with Happy Trails before. Good people! I'll probably just order one of those. The engine is not worth taking chances with.
I haven't read any dB reading comparisons. FMF lists a 96dB maximum on the Q4, with most models coming in below 93dB. They report a 1.5 dB reduction and 3hp increase when using the MegaBomb header.
Thanks RageHardIntoTheBendies!
SamM
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