im starting to mod my gfs polaris trailblazer. if i put a K&N airfilter on this atv, do i need to rejet? also the "prefilter" that comes stock with the machine, can i discard this item after i install a K&N airfilter with a precharger?? i am not real familiar with two strokes, so i dont know if it needs to be rejetted, or if the injection system will pump more oil in or what. thanks.

 

You shouldnt need to rejet.......but it could be possible. just check the spark plug now and then to make sure its not runnin too lean.......hope that helps
mustang