i strongly agree with blue light, slp pipes suck, i ran slp single pipe with the Y and the silencer, it got nowhere near the power (they claimed it would), so i sold that system and went with the jaws twins, and wow did they wake that baby 700 up, i have yet to see a slp m8 crank out juice my jaws twins m7 is, however the pipes and boondocker are now for sale as i just installed a cuttler turbo,
i also have a 2009 m1000 SP, i sent my top end away to brent from arctic edge, i will tell you now, this guy knows his cats and basically i asked him how do i make my m1000 crank out the power without going to the turbo, so he told me to send him my top end. about 4 weeks later i got my top end back with a nice set of jaws twins, he ported the jugs, shaved the head down and added a 2nd base gasket to raise the ports so you can advance the timing. this thing rips, unless im up against a 30,000$ yamaha turbo im breakin trail, and so far, no problems at 800 total miles.
there is my 2 cents on jaws, my only complaints were they melted my oil jug lid on my m7. and they melted my throttle cable off on my m1000, but a few minor mods and good to go. also these pipes are fairly loud, here is a video of my m7 on youtube.
http://www.youtube.com/watch?v=9jTyn1beVCs