Well, I've taken off the Power Commander, and the bike is possibly less jerky on/off throttle than it was with the PC in place. May not be quite as aggressive acceleration, but that's hard to judge, seat of the pants. Now I need to get a DB Killer for the Termignoni. Once I've got that, and the cable for GuzziDiag, I'll install the pretrzel/Termi and try mapping it, and see how that works out. If good; I guess I'll put the Power Commander and AutoTune (over $600 new, it looks like) and the Sistemi/Quad D canister on craigslist.
