I was finally able to get a GPS and test my top speed on the 650r and was very dissapointed. I have a 2005 R with the Edlebrock Carb with #19 needle and HRC Exhaust tip on Stock muffler. Totally uncorked to my knowledge. Stock Gearing and Wheels. Elevation 2880 ft above sea level. There is no backfire on decel. I weigh 225 and fully geared about 240 I didn't have a full stretch and the bike did go 90 MPH but after reaching 85 it seemed the bike didn't have anything left. My buddies 650l BONE Stock does 93 in the same elevation. I am tired of my buddies L and my other buddies KTM 525 beating me... =) Any suggestions? Will a pipe make any real difference? I have heard that a rev box will not do me any good at this point? true? If I drill the airbox is it noticeable? I just want it to reach 101 MPH. what do I need to do? Will I suffer a huge los in MPG?