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MWR Air filter kit Vs velocity stacks

57K views 100 replies 28 participants last post by  Steve C  
I have the big MWR (top replacement) running with full termi 2-1 and race cams with ecu. The bike makes tons and tons of power all the way through the rev range, but runs a bit rough and surgey in the lower rpms. (I have not ridden many other hypers, but it sounds like a lot do anyway)

I have not ridden a bike with stacks, but I will say the MWR is very loud! At first I loved it, but now I always wear earplugs, and find the tone just under 5k rpm and about 1/4 throttle almost annoying. a bit buzzy.

I'm going to leave my Paul Smart stock air filter wise now. don't want to cover up my exhaust note or go deaf!