Howdy. I t says on the HMF website to go with a 180 jet when you have their slip on and no lid. I put a 180 in and it just sputtered after 1/3 throttle. I went down to a 160 and it ran just fine. I had to pull that rubber tube out when I put my K&N in. Do you guys think maybe that is the problem? Thanks a lot!

 

Nope! Many people in my area are finding that the reccommended jetting for the HRC kit and aftermarket pipes is way too rich! 155-160 main is perfect!