Rode my first 100 miles on my KLX 351. Loved every minute. 50% highway and 50% on twisty road with lots of winding through 2nd 3rd & 4th gears. 55.2 mpg... just FYI

 

sounds pretty good to me. have fun with the new found power.

 

That's about what I'm getting with my 351. I haven't been too gentle on the throttle so I could probably improve it.

 

Good to know, any updates?
Still holding up?
Seriously considering the mod
Thanks in advance.

 

With stock CV carb full throttle I got 54mpg, riding like a grandma I got about 58.

Tm36-68 stock jetting, 41mpg full throttle

Tm36-68 mustang approved jetting, 58mpg full throttle!!!!

 

I average about 50mpg-even when it was a 250.

 

Okay folks, few things are exciting as more power with better mpg. BOY AM I SHOCKED AT WHAT I SAW TODAY!


Let me give you guys the MPG history. Stock 250 was 55, dynojet kit was 56, 351 with cv carb full throttle was 54, 351 cv carb 4k rpm shifts 58mpg.

351 tm36-68 pumper full throttle 58, 351 tm36-68 pusy footin' 4k rpm shifts (with 3 full throttle passes) 68 FREAKING MILES PER GALLON! All city driving speeds under 50 mph, tank filled at 100 mile mark

I attribute this to of course the near perfect jetting (p6 needle instead of p4, so mpg could be better) and I also just discovered that my 130/80 tire takes my stock ratio and makes it emulate a 15 tooth front sprocket from an engine RPM stand point, though this was the case for all previous MPG readings. On a side note, I've had the 13 tooth front with my tall rear tire bring back to the stock ratio, and man that thing was a beast! even without the pumper, I can't imagine what it will be like when I go back to stock tire height!

In conclusion, more power? better mpg? Tm36-68 is the way to go