I recently got 28 kehin carbs for my banshee and i am having problems getting them tuned in. I was wondering what size jets(PILOT&MAIN)to use.I have a mild port job with fmf torque pipes and about 4000 ft. elevation.

 

I have a mild port job with 35mm Keihin Air Stryker carbs.

At sea level, I used 158 Mains, 40 Idle Jets and a CEL Needle in the middle position. This set-up went with my Paul Turner Fat-Boy pipes.

With my CPI Drag Pipes, I run the 175 Mains, 45 Idle Jets, CEL Needle in 2nd from the bottom position at sea level.

I know this isn't the same elevation as you, but it gives you somewhere to start???

Good luck!