Although I've never used this stuff as I think it's a waste of time and money (sorry), this is what I would do. Find a bit of pipe/hose, like you get with WD40. Undo the jubilee clip on the intercooler hose at the plenum (intercooler side). Slide the little pipe down between the intercooler and hose you have just undone, so there is just enough left to attach to the 10k boost can. do the jubilee clip back up but, not too tight. Start the engine, attach the 10k Boost can to the little pipe and commence the 10k Boost proceedure.
Hope this makes sense. If not, just use Optimax, as you should be, as this will do the same thing only better and more thoroughly !