I know a friend that has used this for his Guzzi Griso. Made it 100 % better. I see on there website they have a map for the 990 SD and ADV. Anyone tried there maps? I think its a bit like Tuneboy but thier map just could be a good one and a fix for some of our probs on low throttle. His Griso runs like magic now he says so perhaps this could be worth a look? http://www.rexxer.eu/e_rexxer.cfm Anyone tried Tuneboy? I would like to get an idea of them all.