Hey out there, glad the snowmobile season is finally here! I bought a 2001 Z440 last year and put 1700 miles on it last season. I know its not the fastest in a straight line race across a lake, but it does excellent in cross country races-in ditches etc. I love its acceleration, handling, suspension, and just about everything, BUT, i want more top end and horsepower. So im asking, what are some descent mods i can do without spending alot of money?? maybe not even spending any money at all, just little things i can do to the motor, thanks!!