LM-1 Data log, MPS/AFR Options

[rfinegan]

I wired up the O2 and the LM-1 with a new Tach channel (I need a TPS for throttle position/load next)

I think this a a cruise speed , with a little more throttle in near the end.

The full stop (3/4 to wot)seems to be about 12.1 or so ( I am liking that ok) NOT SEEN ON THIS SESSION


MPS looks lean on cruise/ part load
Head temp gets hot on light cruise about 60 MPH

This tool seems to have a lot of features for the $$$ and still works well for being so OLD!

Maybe some decel/over run here too on the graph, I need t make notes on the recordings, not EZ for 1 person that is the driver.

[Ninja]

15.8 would bug me. I'd prefer 13.8-14.5 cruise and I'd want to know if 13.8 reduced cylinder heads temps versus 14.5.

3/4 throttle I'd want 12.5 or lower, once again I'd be looking at temp data here too.

In my book 16 is "lean burn" beginning. On a water-cooled engine I'd want port injectors, modern digital FI, COP, and knock sensors. I would not be looking for power here, just fuel economy.

I wouldn't run 16-1 on anything built in the 70s without fully updating everything and I'd still be more conservative and lean towards the rich side of things.