I wanted to put my 2 cents in about the tuning on my 01 KLR, after break in I installed a dynojet kit per their instructions along with a Cobra pipe, the stock jet being a 148 and the new jet being a 150 the only real difference I could see happening maybe a little quicker response because of the adjustable needle, I rode this set up for about 600 miles in which time the Cobra pipe self destructed. After a phone call to Dennis Kirk I shipped it back and purchased a Supertrap IDS2 pipe. While the pipe was in transit I followed Mike's airbox mod instructions and cut the box and removed the screen, now running a 160 main jet, 12 disks in the trap, the adjustable needle up all the way and the pilot screw set out about 31/2 turns the bike makes power from about 2000 RPM's all the way to Redline. With a 16t front sprocket I didn't need to use any clutch to get the front wheel off the ground (a few inches), now that winter is here in NH I decided to put the 15t sprocket back on because I will probably be doing more dirt riding than street. I just came back from a ride, the headlight points at the sky with just a twist of the wrist. I did notice a big difference jumping from 8 disks to 12 in the higher RPM range insead of running out of steam at around 5 grand it puuls really hard.
BTW, after 5k the stock tires were replaced with Avon Gripsters, I don't really like them on the pavement (feel unpredictable) and they are terrible in the dirt.
John
01 KLR
00 Concourse
81 R100s
Looking for one more!