So, just as a round up of what's hot and what's not, what have you done to yours and was it worth it?
Just for starters, here's my contribution:-
05 map installed: definitely worth it for all the reasons we all know.
Removed the restrictor thingy in the air box: Made no difference I could tell.
Wiring mod and fuel connector already done and also well documented. So definitely worth it.
Did the fuel pressure regulator mod: I'm not convinced it's made much difference to be honest. There may be a bit of an improvement in fuel consumption but it's hard to tell really.
16T front sprocket: Much livelier, as you might expect, at the expense of being a bit busy at cruising speeds. Given most of my riding doesn't involve too much cruising, I'm happy with it.
Mille front forks and rotors: Another good mod, mainly for the improved braking. Never understood why Aprilia fitted smaller rotors to a heavier bike designed for 2 up touring

HID headlight and dip beam mod: Love this one - seems to make the bike much more visible to other road users.. MoT tester tells me every year that it's not strictly kosher but isn't a fail point so long as the beam pattern is correct - which it is.
Stebel Nautilus horn: Don't need it much but, when you do, it certainly gets the attention.
Power outlet in the moulding on the right hand dash: Very useful but now wired the sat nav in permanently. Still handy for charging phone but have to watch the cable doesn't tangle.
Zorstec cans: Love these too. Still has the bread box fitted but they give quite a rich rumble, particularly on the overrun, without being too loud (although my fiancée claims she can hear me way before I arrive home!).
Double bubble screen: Better wind protection for me (I'm 5' 10") although not too sure about the aesthetics. I'm keeping it for now though.
I'm thinking of fitting a back rest for the pillion so if anyone has any ideas on that, I'd like to hear them.
So, that's me. What's every one else been up to??
Cheers
Dave