Search the scottoiler website. It shows you how to install. You need to drill the rubber manifold between the airbox and throttle body then use the brass connector. You could also drill and tap the throttle body which would be less likely to fail and leak air at a later date. A bit more invloved as you would need to remove the throttle body and tap a thread rather than just drilling the rubber.
I'm sure I answered this question for you over on advrider though. Can't be too many people from Dumfries riding Xcountry's