Yes.
I have been on map for quite a while now.
It is nicer to drive, not necessarily better at making hp.
When I switched over I should have re-started from scratch.......again.
I have re-started several times now, mostly because I change things. Tweaking and modifying all these mix and match parts to do what I want them to...
So yes.....about a temperature input.
The megasquirt kit computer and its code is capable of a lot of adjustments, settings and scaling. So it is possible to use just about any thermistor on it.
But
Most any vw head temperature sensor, (such as the ring thing under the spark plug), is not a thermistor.....it is a thermocouple (usually a k type).
Mario at the dub shop has a thermistor in a bolt down lug. If put in the right location it can be fairly accurate.
The thing about it is......it dont have to be accurate, just has to see a rate of change.
Oil warms up quite slowly....it would work, but you would have an incredibly long choke time.
So you need it on the head (which warms up quickly). But the head is going to be much hotter than the water in a v8. Megasquirt dont care.....you put whatever numbers you like in there for the enrichment. The bought auto tune system will not have this and will be made for a water cooled engine. When it reaches a critical temp....say 280...it will be in alarm/shut down.....but your vw engine will just be getting fully off choke and warmed up. So to use one of the fixed auto tunes systems you will have to externally trick the computer......resistors (inline or to ground) to make the signal from the sensor in scale to match the input capabilities of the tuner.