I've wired everything and I can kind of start the car. NOW WHAT?

[AndreyB]

I have a random car. I can kind of start it if I crank it long enough, it runs extremely poorly if I keep it alive with throttle, I do have the wideband showing all over the place and MAP showing what seems to be legit values.

I am good with my PC and I can swap my brake pads but that's it.

Where do I even start tuning this from "I can crank if I warm it in advance on OEM ECU" to "I can happily drive off the trailer and do not stall on track entry?"

Do I have to take some $$$ course? Is there a must to watch youtube? Any must read PDF files? Is there hope?

[AndreyB]

Oh we have https://github.com/rusefi/rusefi/wiki/Get-tuning-with-TunerStudio-and-your-rusEFI