Pretty in Pink, dunno why
Join Date: Feb 2009
Location: Redondo Beach
There are two ways that a jet kit can reduce your mpg.
First, it works real good and you use more throttle to get more thrills.
Second, it ain't working right and it's too rich.
I'm betting you're too rich. Reduce jet size and check again.
See, the only reason to increase jet size is because you've made some intake/exhaust mods and are running lean. Increasing the jet size brings you back to a proper mixture. Going overly large on a jet, such that it runs rich, does nothing but waste gas. It can't make more power without more air, which means more aggressive mods. I have no idea what the actual DJ jet sizes are that you're referring to. Do you have a cross reference to Keihin jet sizes? The most extreme mods that can be made to the KLR - intake, head, exhaust, are hard pressed to need more than a 147.5 jet with a KLX needle.
If you are at the proper mixture, the bike will not use more gas for a given situation. If you were getting 45mpg before the mods you should get 45mpg after the mods, as long as you don't change your driving style. The extra power that the mods made is potentially there, but doesn't come on (and use more gas) unless you twist the throttle.
Tom [email protected]
“The kid poured him another straight rye and I think he doctored it with water down behind the bar because when he came up with it he looked as guilty as if he'd kicked his grandmother.”
'How' are words so important they cannot be too often used.”
Sting like a butterfly.
Noli Timere Messorem
Last edited by Tom Schmitz; 03-17-2011 at 12:01 AM.