Installed aftermarket full exhaust system with recommended jetting, & K&N intake filter and engine is poping & backfireing like a leen condition.
Has anyone experenced this with an aftermarket pipe on the Preditor??

 

What jet are you running? Most have had great luck with the 170 range. Also you're not bouncing off the rev limiter are you?

 

ken if u lived in say, south eastern wisconsin which is roughly 6000 ft or less, pretty much sea level I would think, running nothing but a k&n drop-in filter and a pure polaris pipe........... your telling me the average is a 170 range main jet?................please give me the best jet size for my elevation, with the set-up mentioned......................................... thanks.....,,,,,,,,,,,,,,,,,,bap