In preparation for some testing.

Updated to latest version of firmware, It turns out I was running v 40.
Enabled logging and engine position.

On key on engine off, I got -40 temp and 5 for voltage[pcm read 12.0 at the same time].

I guess they got picked at the time of starting.

Coils set to 514a.

I am also investigating that voltage drop issue. I suspect belt slipping or alternator switching off at very high rpms[around 6000]. I also find that alternator bearings are busted again. Installed new belt + new belt tensioner. I am really clueless on this[ changed 2 bearings sets in 1000 miles interval].

Also change the voltage byte stream to one of the injectors. Now it will show voltage measured at injectors. There is some good 0.5-1v drop inside the car where pcm reads voltage[fuel pump line]. I also bypassed fuel pump from the circuit on a separate fuse.