Hi, I have a Raptor and i'm having some proplems with deciding on how to jet it. I have an open k&n air filter and a full big gun exhaust. I also have CT's high compression piston and a web high flow cam. The jetting that I have been running is 145/150. I decided to buy a dyno jet kit but that just confused me more. It tells me to run a 144/146 witch is smaller then what I already have. My elevation is about 4500 feet. Can someone throw me some help on this. I just don't know what to jet it at?

Thanks

Warren

 

Stock jets and Dyno jets are different as far as size goes. Here is a cool chart to show comparisons. It may just confuse you more but its still a good chart.

Chart

Unfortunatly this chart does not go under 150 dyno jet sizes. Just put in what they reccomend and go up a size at a time till you get what you want if its not right from the start.