Vforcedave Posted April 13, 2010 Newb here. Just bought my KLX450 08 model brand new. Did some research before buying but I was fixed on it. A couple short rides and experiancing these "issues' the bike is known for. Running hot, poor idle when not on the gas, etc. Reading all the different comments on the mods is discouraging at best. The mechanic at the dealership already removed the end cap on the exhaust, modified the air box. Trail riding, FTR and some small tracks for fun only, is the plan. No Competition. I just want to make this bike easy, relaible and fun. Where do i start. 👍 Share this post Link to post Share on other sites
curtjeaz280 My Ride Posted April 13, 2010 Welcome! If you are running stock jetting with the oem muffler uncorked, I can imagine your unhappiness. It might even run better with the plug in the tailpipe. JD Jet Kit or similar, air fuel mixture screw, aftermarket muffler plus the airbox mod you already did and it will run cooler and make you smile when you twist your wrist...... Also, that stock battery may go bad earlier than expected, so dont be surprised. Get a battery tender for when it's parked. Share this post Link to post Share on other sites
Albertagreenmachine Posted April 13, 2010 Remove the ais, promoto insert if you are keeping stock pipe, JD jet kit as the settings they have listed seem to work excellent, fuel screw, battery tender. Share this post Link to post Share on other sites
mele63 Posted April 13, 2010 Welcome aboard. The bike needs some minor sorting. After that, it's all good. Share this post Link to post Share on other sites
ImFlying My Rides (2) Posted June 13, 2010 Pretty much like everyone else here I did a few mods immediately after purchasing my KLX: 1. JD jet kit (running 170 main) 2. open up air box 3. FMF powerbomb header and pipe 4. 13 tooth front and 52 tooth rear sprockets 5. Devol radiator guards and skid plate 6. MSR handguards 7. New battery I also have waiting for the next down time: 1. Flexible fuel screw 2. AIS removal kit 3. Tu-Bliss tire system With those mods I have never experienced any overheating even in the most technical areas (low speed High rev). Once I replaced the battery with a new factory battery, my starting problems went away also. The bike has way more power than my DRZ-400 even with the Athena 440 big bore kit and Hot Cams. The new gearing is great for the trail riding we do with lots of vertical. Do your family a favor. Carry a SPOT2 GPS locator so they know where to find the body. Share this post Link to post Share on other sites
Rome06379 Posted June 15, 2010 Check everybody's "garage" info for our setups. They're all pretty similar. Welcome to the club! Share this post Link to post Share on other sites
Goodwood2 Posted June 15, 2010 You ever ride Croom? You can ride mine there....and see how you like it. Couple of easy mods. You gonna ride the KLX in the FTR hare scrambles? Share this post Link to post Share on other sites
GreenHornet450 Posted June 15, 2010 Carry a SPOT2 GPS locator so they know where to find the body. 👍🤣:lol: Share this post Link to post Share on other sites
geodirt Posted June 15, 2010 Bought my "new" 08 a few months ago after reading the info here. Didn't like it very well stock. I did the "usual" mods = JD jet kit, opened the air box, exhaust insert, AIS removal, Flex fuel screw, heat reflective tape on the bottom of the gas tank, a few guards and a heavier rear spring. Now it's great! Doesn't over heat creeping around the muddy woods and makes my arms sore when getting on the gas. Starts good even after falling over upside down with gas dripping out of various holes:blush:... Set it up and enjoy! Share this post Link to post Share on other sites
SDMF_Reaps Posted June 16, 2010 Only thing I would add is to grease every electrical connection you can find. Also if you are able pull the pins on the stator connector (under fuel tank on left side) and reverse the ends so the male is on the bottom instead of the top. This lead to a lot of stators burning up. Share this post Link to post Share on other sites
sclifton Posted June 20, 2010 Dave,, my bike did the same thing and I was very worried I just spent $4500.00 on a pile of @#$% how ever I installed the JD jet kit and on its second full ride 55 plus miles of hard mountain riding it ran great and better each time out. I have no complaints with this machine it has sort of over heated once but thats normal on any bike when you lugg it around. Good Luck Share this post Link to post Share on other sites
GreenHornet450 Posted June 20, 2010 Run EVANS Coolant & Boil Over will be a thing of the past.... Share this post Link to post Share on other sites
sclifton Posted June 28, 2010 Eveans coolant boils over at a higher temp is that a bad thing to have it running hot and not knowing? Share this post Link to post Share on other sites
GreenHornet450 Posted June 28, 2010 The mechanic @ my dealership & the majority I ride with use it. NO PROBLEMS. Its still cooling the engine vs. low or no coolant Share this post Link to post Share on other sites
