ok i was just wondering what i should jet my raptor 660 I put on a hmf silencer not the whole pipe and hmf says on the left 145 and right 150 and move the clip to the 3rd position oo ya and i am above 3000 feet i was just wondering if that was right or if anybody had anything differnt thanks alot

 

well your jetting is 145-150 ok..the best thing you can do is pull your plug...if it is white your lean..you need to go up anway from 150-155 or 155-160 im thinking with your mods..if it is a light brown or tan your good do not touch them...and if it is black and wet you are fat..and need to jet down... Hope this helps..