mods for better mpg

[CA ExhaustCoatings]

Originally Posted by mikehallbackhoe

can't say I noticed a big change in mpg. too many variables in riding conditions, and too many changes at once, but I believe the grooves make a faster burn, which could effect timing.I haven't changed jetting, or modified the air box, other than routing fuel tank vent into bottom of air box. I am sure I am running lean. riding two up, took a trip to the coast the other day, running 65- 70 , averaged 41 mpg. I am considering adding a water vapor system, heating the water with exhaust. if I use the throttle cable to operate a cable operated shutoff at idle, possobly a small carburetor, I could control how much steam I put into the bottom of the air box.

that's a great avg at that speed two up. that's in the mid 50's mpg straight hwy IMO.
is your car tire larger dia that stock mc tire?
do u know that the last few yrs of the GW GL1500 gears will go right into our bikes? The GL has a higher OD ratio. A lot of work though to split the cases esp of a 230lb engine. I always think one day I want to do it or just swap in a GL engine and use the existing heads and carbs from my bike.