All great points on excessive noise, we are in the minority, it only takes the right person talking to the right person and walla, areas get closed. I chose the Q4 FMF for a reason, it's quiet, yet helps her breathe better. The Hoh Rainforrest ride I did a coupla weeks ago there were a coupla KTM riders with obnoxious pipes, there were quite a few riders who were annoyed and commented on them. I also received quite a few comments on the Q4-all to the good, with a few considering the swap. They had always stayed stock because they just didnt want to add to the pollution (noise). Do the .22 mod, drill the slide, try out the Q4 and enjoy the scenary. I'm happy with the increased torque and response, keep in mind, I have a heavily modded C14 with something in the neighborhood of 160 at the back tire. The KLR is my on road/off road 2 wheeled tractor, all I want it to do is pull me around without undue effort, and it does. I even put the stock pipe back on my YZ, it was just too loud with no real gain in performance. Why tick off the voting populace?
To have loved is to have lived.
'08 C14 Full pipe, PCV, Auto tune, Flies out
'06 YZ450F Uh, Bark Busters and Trail Tech Vapor
'05 KLR, Trail Tech LEDs, Trail tech Voyager, Bark Busters, .22 mod, slide drilled, FMF Q4, Trackside heated Grips, EBC 320mm Rotor upgrade, cleated pegs, Pirelli M21s, 25mm ammo can tail box, soft bags and 2 large MSR fuel bottles.
A smile a mile and an hour in the saddle beats the heck outa an hour on the couch.