| S4r fuelling
I have an S4r with an akrapovic slip on with baffles removed, and have had fi tweaked by dealer to suite first time round it ran real bad lots of flat spots. The mixture was then richened runs much better but im getting the fuel light come on at 60miles and getting in about 11 litres which mean the fuel light is working ok to.
Is this cause they can only adjust it so far? or are they just not good at it? i was planning on replacing the udder for spareshack pipes but he said this will make it even richer
He said it was something to do with there not being enough back pressure? when they are straight through cans etc? | 
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