i have the kit,...you can run a 55 shot SAFELY ,..that means,..install the kit and go have fun,..it doesnt mean to abuse the kit as in spray just to beat a yellow light ,...i ran a 75 shot for a year with no problems though,..my motor was pretty new,..i put in colder plugs and messed with my timing,..but i have since down jetted to a 55shot