I will check everything tomorrow. I'm not sure how can it be a vacuum leak if me creating additional vacuum leak reduces the issue... Also I smoke tested it.
One attempt that I was able to record.Go back to post #15 and do the Rev-Rise test and post the log. Lets have a look at the MAF data.
Just replace the voltage regulator on the back. CheaperSo we figured out that alternator is self exciting. Basically the dashboard battery light didn't work, but when we tested the controlling connector of the alternator with the ground then the dashboard battery light lighted up. So technically the alternator doesn't respond to the control signal and just living by its own. I'll try replacing the alternator if we don't figure anything else.