94 940 strange issues... HELP ME!

[XxTheFirstxX]

Okay, so to start off... I bought a 940 turbo car for $300 non running, this is my second 940. The ignition coil that was on it was no good, one of the terminals was really loose and had some black stuff in-between the terminal and the coil... When I went to interchange a coil from my other 940,
(Issue one)
I noticed that the positive coil feed wire seemed to be melted. I tested and get 12v at that wire with key on. After getting the fuel situation figured out (incorrectly installed and wired pump as well as hole drilled in the gas tank) I went to go fire it up. I had no spark! I began futzing with it, and found that if I take a wire, directly connect the negative side of the coil to ground, crank it for a second, then disconnect that wire and crank it again, spark comes back (I have no idea why... I also noticed that I hear a really really quick "brrr" from one of the relays when cranking with that wire attached, that's how I know spark is back)
(Issue two)
When I key the ignition on, if the coil is connected, the tach will read 3k, if I start cranking it, the tach will drop to zero and begin twitching like normal...
Also, will not show 3k rpm if the shop battery charger i have is not supplying voltage
(Issue three)
When I install a battery, and not just power it from my shop battery charger, it doesn't like that... (Yes the battery is no good, I just don't feel like buying a new one) if I connect the negative terminal of the battery while the car is idling, it will shut off (even with the shop battery charger on)
I can occasionally get it to run while the battery is hooked up
(Issue four)
I tried taking it around the block, it drives, but is not happy about it. Flooring it is not an option, but if you gradually give it throttle, it initially falls on its face, but picks up power a few seconds later... (It will drive up-hill, etc) (I think this is due to the MAF sensor being unplugged, I cannot get the car to start at all with the MAF sensor unplugged... possibly because it's not in the intake stream as I don't have the tubing that goes from the airbox to the MAF and to the turbo inlet from that)

Edit: I spent like an hour, fighting it to start, got it started... put the MAF directly in front of the turbo inlet and plugged it in, the idle evened out and went to ~800 rpm (same as my n/a 940 that I have no issues with) but as I took it for a ride around the block, I blew the elbow off of the turbocharger charge outlet, and she didn't want to run like that and died... and I CANNOT no matter what I do, get it to start with the MAF connected!

When I bought this car, the story told to me was that it had been sitting in someone's yard for a number of years, they couldn't keep it there anymore so they gave it to a friend. Said friend was "going to pull off the turbo to put it on a Ford ranger". Their "friend" was also a drug fiend...
Any advice is appreciated! TIA
Just hoping someone who knows these cars more than me can give me some advice!