318 mystery problem, somewhat solved!

So I tried the idle setting like you said and can't seem to make any effect on it. I disconnected the IAC motor, no error luckily. put it to 13:1 and then began raising it but as soon as I changed it the MAP began to go lower, do I keep going until the map gets as low as it will go and then starts going back up?

I go it to 15:1 for curiosities sake and it won't idle at all there, sputters and dies. Also the RPM will increase and decrees in a rhythm occasionally, not quite sure where that's coming from.

Edit: ok so I got it to run at 14:1 at idle but I had to raise the idle rpm from 750 to 900 and there's a noticeable low popping coming from the exhaust. Also the IAC is at like 40% when it should be at 20 at idle, there is an idle adjustment screw though, but I don't know if I can use that with this.... Idle is still erratic though, rpms will raise and lower a bit and it isn't very smooth. I'm going to try advancing the initial timing to and see how that helps. Any tips c130?