whats the most fuel efficient 2 stroke snowmobile you have ever ridden, seen, heard about, or have read about? or how about the worst?

you know thats actually a very hard question to answer,so many factors involved, carb size, jetting, timing, mileage on motor, riding habits, all those play a key in gas mileage, so it is almost impossible to answer,, (peace)

no, i mean totally stock, no mods, or changes to the engine, completley new

As far as stock, Yamaha triples are the best Ive seen.

out off all the sleds i've owned, my 94' t-cat was the best on fuel. and the only one I never blew up.!

yamaha 700 triples , The other choice is zrt600 .
Rob

I am going to have to go with every body else, yamaha makes a pretty clean triple, slow but clean LOL, but you have to remeber that in most cases the EFI sleds will run the cleanest, just beacause the computer will compensate for, temp, alt, and humidty. CATS 500 seem to run pretty clean, as far as smoke at startup and keeping a consitant plug through the season. SWRules

Those Bravo's are pretty good on fuel.

:)