Finally got hold of my FIM ultimap 853SPS
chip. Fueling probs, what fueling probs ?
Popped it in and it started first time, and it idles! whoo hoo
Can't recommend them enough. I should have sticked with them after I had the conversion done as I was running the 748 version before. Pc2/3's are fine if you have the time and money to set them up but I reckon 125 quid for a fim chip is a better option. You really can't beat the feel from the throttle now. The bikes back on standard cans after I sold the 54mm system but It hasn't really made that much difference
I think the original cans may have been cored. No more cutting out on a closed throttle
go buy one, NOW.