I'm a new guy whose been reading up a lot, but finally decided to post and ask for some help. I bought a new 2009 KLR-650 last spring when they were discounting them at the dealership. Man, has it been a fun machine! Before the KLR I had a 650 V-Strom, and although the Strom is one great bike, the KLR is so much better off road. So I've been very happy with the change to the KLR.
Being winter I've decided to do some basic mods to the bike, and because I started down this path, here's where I'm at, and what I'm hoping to hear back from you folks on for help trying to get the right general setup on my fuel and air and the rest of the mods too.
I took the plastics and tank off to paint it satin black a few days ago. I' just finished the paint tonight! While I have the plastics and tank off I'm hoping to learn about what may be the best try for the combination of mods I might be needing for what I have.
Everything I have right now is stock – I'm hoping to improve the bike for some better engine and throttle performance, cold weather gear (high watts) power use, and better stability at speed.
1) KLR Needle Mod Help – I have the needle and several jets on either side of the stock on order and coming in the next few days. I assume I need advice on which jet to pick if the stock needs changed, and which position to place the KLX needle in for the first trial. I also assume I need to change the air mixture screw by drilling the cap off it, and rotating it out from bottom, anywhere from 1 and ĺ turns, to 2 and ľ turns, but don’t know which position is recommended. The forum members recommend drilling the slide vent hole out too with a 7/64 drill bit.
2) L-Mod Advice – I can and will do the L-Mod if it's advised?
3) Frugal Exhaust Mod or wait to buy a SuperTrapp? - I'd love to buy a new exhaust but I have a inexpensive insert coming, that has a spark arrestor in it, which if used, will allow me to hole saw the back of the stock exhaust and remove the existing baffles and install it, but only if it's advised by you guys? Or – I could wait and buy a decent after market exhaust, like the SuperTrapp-ISD2-Quiet that Tom Schmitz is running. As a note, I have not been able to see any kind of smog control wires or vacuum hoses – at least not anything on the bike right now! I live in Washington State.
Some other things I'm doing over this next month, are progressive springs, and a fork brace to help stabilize her a bit at speed I hope! A 16 tooth front gear for some long pavement based trips this summer. I have ordered and will be replacing all of bikes traditional light bulbs (except the 2 headlight bulbs), with LEDs from Superbright. I'm doing that to save watts as I need to get setup to run a Gerbing jacket (75 watts) and gloves (23 watts) to help me extend the riding season up here in the frozen freekin' north.
The biggest challenges I think I have is what to do with the KLX needle height, mixture screw, jet size, exhaust options and L-mod choices. I'm a total newb on this stuff, and any help will be AWESOME!
Anyhow, thanks to everyone for the existing help that's already findable in the forums on google, and any advice anyone has on these mods that I'm doing now.
I did not end up using my KLX needle. I did the standard 22 cent mod instead. I did not do any exhaust mods either. Here are a couple of pics from the complete numbered image sequence of the 22 cent mod. The whole numbered image sequence procedure set can be found in the link below these next couple of pics. Thanks much to everyone for the great help on this mod.
The entire 2009 KLR-650 22 cent carburetor mod - numbered image sequence can be found here: