Don,

at some point ALL cars get into areas known as "Magnitude of Difficulty"!

I'm sure if one wanted to spend enough time, effort & money (for tools) that they Could set the 4 throttle bodies. I can see how trying to avoid Dealer Involvement "at all costs" could be achieved, but then the question becomes "why" ??? An owner can do at lot to keep his Lambo running well, but at some point "experts" are a nice thing to have on your side!!!