So I installed my Next R today and I have to say I'm blown out by how it sounds and performs. My Like is stock except for derestricting and ran 35 on flat and slower on hills. When I took off stock exhaust I noticed tons of oil on lug nuts and bottom pipe and tons of gunk in pipe. So I took off plug it was all black cleaned it best I could and reinstalled. Oil pump was completely bottomed out at full throttle so I moved that back to between hash marks guess they did that to help breakin. Now it has slightly better acceleration from stop but when it hits 27 or 28 mph it takes on a whole new tone and takes off like a rocket till 40 or better. In fact on a downhill that a was hitting 40 or so before I almost bottomed out the 50 mph speedo!!