Ok so I am running a set of DMC 916's, my jetting is 27.5 pilot 280 mains and needle clip in the center. I have a k&n filter and a set of vf3's, and +4 timing.Motor is bored to 64.50.
Also i am at sea level. The bike runs great but seams to stop pulling hard in 4,5,6. Am I lean on the main? 30 pilot 280 main needle centered is the recommended jetting from DMC. They also say to use a 320 plus main with the powerpack that they sell, it uses a k&n filter. https://www.dmc-on-line.com/PDF/Banshee-916.pdf
My plugs look like they are on the rich side after riding for a while.
Any help here??????????????????
Thanks guys