Went out and bought a Sears Die Hard 40amp rapid charger with the engine start option. I let the car run for the first 10 minutes, and as usual it ran great.
I hooked a multimeter up and when the FAST dashboard was saying 13.8v, that was the exact reading I was getting at the battery. FAST dash dropped down to 13.5v and the readings at the battery started to vary between 13.4-13.7v.
FAST dash started to show 13.2v and this was confirmed at the battery. At this point the A/F started to change slightly, hitting around 14.0-14.2 instead of the 13.8 range it should have been in. I decided to turn on the headlights, brights, radio and HVAC fans to full, thus dropping the voltage on FAST and at the battery to anywhere from 12.9v to 13.2v, with a steady 13.15v showing most of the time. A/F did lean out just a tad during this and would seem to get better if I turned all the stuff off.
At this point I decided it was time to throw on the charger and see what happens. Set the charger to 40amp fast and turned on, could hear a slight change in the way the engine ran, nothing much but just a slight variation in the idle. Looked at the FAST dashboard and it was still reading 13.3-13.4v, however reading at the battery with multimeter was 14.12v. It never got higher than that though AND with the charger on the car actually ran leaner (like in the high 14 range to 15.12). Turn the charger off and the car would get a little richer.....that doesn't seem to make much sense to me and would seem to go against the whole idea of this experiment.
Thoughts?