[dcb]

Well, you don't have to be *that* much of a gearhead to splice and route a few wires! And it shouldn't take "hours" if there are decent instructions for the vss thingie.

But for the user who is too "lazy" (for lack of a better term) to hookup a vss/injector monitor, they probably aren't going to want to use the exactness of such a setup. Average/relative readings are far better than none, but more exact readings can let you fine tune, but you have to not be lazy to fine tune in the first place. So consider your audience.