i have develop a new cdi box for the polaris predator 90, 50 and scramblers,e-ton, bombardiers, etc..., which you can program the rev limiter and ignition timing, all you need is the cdi box [img]images/graemlins/AR15firing.gif[/img]and a palm os device(palm pilot organizer) with os 3.5 or higer, the software is free.
this is what you can do with the software in the palm pilot:
you can keep any file name 25 character long
dates when you program you quad
notes,over 4,000 characters about you quad
revlimiter from 5,000 to 16,000 in 1 rpm increment.
16 ignition timing one for each 1,000 rpm increment from 1,000 to 16,000, from 0 deg to 45 deg advance-retard deg
you can set the offset from 1 deg to 99 deg to be able fit deferent atv from 50cc to 400cc.
all you need is a atv with a battery, a magneto with pulser like predator 90, 50. palm pilot with serial port, and the cdi box.
for more info: