Anybody logged voltage? I installed an AiM MXL2 system recently, only got out with it last fall. When viewing data, how do you determine what is erratic and what is not? Also, the voltage the system is indicating is at least .5v higher than what I read at the battery (& cut-off switch) with my Fluke DDM. The Fluke is an older, lower end model and needs to be replaced, because the LCD screen has been damaged. So, possibly the multi-meter is reading off a little . The MXL2 is showing peaks of 15.5v. Testing in the paddock the paddock the Fluke was showing 13.x-14.7v at Batt., which would be correct range according to specs.
Reviewing the data I have, the voltage range stays consistent from start to finish of a session. Also, the traces are relatively similar from lap to lap. I had to reset the upper alarm to 15.5v and low at 12.7v (I think) to keep it from staying on while on track. So my first concern is, is it over charging (assuming data is correct). If the MXL2 is reading high, is there a way to calibrate the unit? If not, I can live with the alarm adjustment. Second, concern was, is this alternator ON too much and robbing me Hp? Or, does this look like normal behavior? The upward spikes would seem appropriate to me, since they follow RPM drops from upshifts, but should this trace be so aggressive?
Here's a not very clean lap rpm/volt trace.