Main Jet Suggestion!?
 

2004 z400 in 1200 ft altitude, pro circuit T-4 slip on and K&N filter....also gonna add K&N filter lid. So suggestion for both would be great..


Thanks
Chris

what size jet are you running now and how does your spark plug look befor you add them

all stock and i know about checking plug color and condition...but last time i did a dynojet kit i ended up about 8 jets off of the instructions suggestion... so i justed wanted a good one to start with

Id start with 2 sizes bigger then you can always use the air fuel mixter screw to fine tune it usually 2 sizes is playing it safe i have a k&N intake on my 400 outty and all i did was adjust the air fuel mixter screw and i was good

ok thanks