Bike is 2006, xtx, (though the frame identity calls it an xtr).
I'm not sure on the 02sensor. That is the 'lambda sensor' in the exhaust? It might not have one.

I've tried to find the AIS, but it eludes me and there's no clear photo on the site. There's 3 potential locations on the manual diagram -
9. Air filter case breather hose
10. Pilot air hose
11. Air filter case to air cut-off valve hose

But nothing that says 'AIS' hose.

Looks like I'll have to just spend the money on a kev fuel mod after all.
Do I just hit the paypal link or do I need to contact him first?