I picked up the C5 from the shop at noon, before the Seattle rains resumed for my team's soccer practice later. Sigh.
Anyway, the little nField voltmeter is cool, and nicely attached. The shop checked for accuracy and said it was correct for the level of precision it has. What I can tell from the ride home is that the OEM battery is not a great one and/or the charging system is a bit anemic. When I revved the motor over about 2.5k the voltmeter moved up to "green". Whatever, I keep the battery on a Battery Tender when home.
The replaced fuel sensor light does not give false readings and the muffler still poots and pops. I'm going to put the OEM air filter back in to see if the K&N prototype is part of the problem.
I gave Ducati Seattle the part number of the air filter retrofit cover mentioned on 3/11 here. They will get it in AND the owner suggested some dyno time so they can check out the air/fuel/gas mix at different levels. The O2 sensor apparently makes it so that the bottom 20% is not adjustable with a power commander. They might be able to defeat the sensor as they do with the Duc's.