What benefit will I have by running without airbox top any noticable change I have a K&N jet kit with a yosh full system and what do you all recommend to run with jetting thanks

 

speedydog...
i just cut my box in half...the top of the air box holds the filter in place....i cut mine right after the first clamp....u will be able to notice a little bit...better throttle response. get a KN filter too

i have the same set up and i run 155 150....at 5,000ft....runs like a raped ape!