Having read a load of posts and threads about the fuelling and fixes..... I decided to do two things to my 09 X. I hadn't noticed any significant issues with the fuelling, but I haven't done much town riding, where you'd notice small throttle openings and any surging / snatchiness.
So first I pull out the snorkel.... dead easy, just eased it out with a tug.
Second I did the CO1 change and upped my level by 8, from 17 to 25.
Then I rode into London for the evening through loads of traffic etc.... First thing I noticed was the increased noise and induction roar from losing the snorkel. Sounds great!
Second the bike FEELs a touch stronger in the lower revs. The snatchiness was more apparent riding through traffic, so I will up the CO1 by another 7.... totalling +15. It also stalled once with a pop at a set of lights, but I think that was just my blipping the throttle and feathering the clutch like a donk!
I think these two things have improved things, I just need to adjust a bit more to get the compromise right...... and it will be a compromise. I don't have the cash for cans, dyno time and PCVs etc..... so a K&N or DNA filter and a bit more playing will be as much as I can do.