Hey y'all I am new to forum. I was doing some research on mods for my KLX and I was wondering how certain changes will affect my MPG. I guess a laundry list will be best. I was looking into doing a sprocket change, a slip-on and re-jetting, along with increasing air flow in with the "free" mods. Which one of these add and which decrease the GPM?

 

Depends on what you mean by sprocket change. going smaller at the front will tend to make you burn more, bigger will improve your highway economy but you lose out quite significantly in power. Re jetting decreases mpg, not sure on the slip-on, but I'd imagine it would decrease it too...

 

With a rejet and snorkel removal, I only noticed ~5mpg loss. I was getting a consistant 75-80 MPG road in stock trim, it went down to a consistant 75 with the rejet. I added knobby tires and bigger rear sprocket at the same time, my MPG has gone down to about 65 or so MPG on the street. Any exhaust mod is going to require even more jetting, and probably a tad more loss in MPG. But the increases in power/driveability with all these mods is well worth it.

 

Ok cool thanks a ton. So pretty much anything drops the mpg heh. To bad the after market tanks don't have locks huh.

 

Cliffsta, I am impressed you got that kind of mileage !! I am lucky to get 60mpg on the streets in the city here. If I do any off roading I am in the mid to low 50's, and that was no jetting or pipe, K&N filter, open airbox, 13t front sprocket.
Whats your secret??

 

Its all about the throttle. If you don't go FWO from every stop and you keep it on the needle, you can get almost as good MPG as stock. The bigger main jet / different tapered needle only kick in when you hammer that throttle and get on the jet by itself. The crazy thing? I'm running a 128 which is probably a bit rich for our summer airtemps and humidity. Now that I've geared it down, well, I can't help but go wide open and impress the ladies on campus So it has fallen a good bit. Today for example: With just a few days of going to class, tearing up my yard, and riding gravel roads, I only got like 58 MPG. It goes way down when I'm rutting up our poor grass and doing 0-60 runs across campus :P But when I'm just babying it I can still do 65 mpg easy.

 

Is there a mileage computer in the 09 digital readout?

 

Negative, I just reset my Trip A meter every time I fill up.

 

Yeah just reset the trip meter and divide the trip by how many gallons you put in to get your MPG. I'm keep a running avg in an xls sheet. Riding two up is really killing my avg.

 

I was just wondering because I don't think the mileage computers(like in cars) are that accurate. Filling up and doing the math is the best way. I only did it once on the bike, and that was when it was still stock. 67mpg that day, 120 miles on hilly back roads.