I am at sea level and am just wondering what any of you who are running HMF's are jetting at. I got the best response running 160f/165r keihin jets with a twin air filter and both slider vents(TPI) opened 3/4 of the way. My only concern was that my plugs were only slightly tan. We run pretty hard through mostly sand at 3/4 - full throttle on 100+ degree days here in the valley. I'm just looking to get a little more fuel without sacraficing power too much. I am now trying the Dynojet set-up; originally I ran the needle on the fifth clip but that seemed too rich(not as responsive 1/4-1/2 throttle) I will now try to run on the fourth clip, I'll keep you posted. Also what the he** was HMF thinking by providing 140/145 jets, that seemed awfully lean after piping the V up to duals??? Any comments would be great. Thanks in advance -Carl

 

Yeah I just got my duals last week , they came with 145/148's Their website still says 140/145s.
Hope they are the right ones!!

 

Just check your plugs to make sure you aren't running lean. I noticed quite a big difference once I added some flow to my airbox, that's also why I have had to jet up.

 

I hear the Dynojets are not all that good. I think alltoys made a post about it a couple days ago.