Just wanted to post about the m4 full exhaust. Just Installed it and the pC5 and the bmc race filter and i couldn't be more happy! I only hit 163 on the dyno and thought i would hit higher but i am 4000 feet up. Don't now how far off the dyno was but ill tell you this..... I went from beating my buddy's 08 gsxr1000 with the same mods (except he has a bazzaz and the yoshi full and filter) Barley when mine was stock and now i cant keep it on the ground and now i smoke him and we have the same things done to our bikes! Today i beat my buddy's busa from a roll and then a stop and both times i beat him by at least 8 bike lengths before i gave up,and he drags. I knew i would beat him anyway. Just wanted to post about it. Any input on the dyno numbers? Ive read that the stock 08 zx10r has from about 156 to 160,witch is right? Cuz mine sure fells like it got more then 3 hp out of it!