S52 idling issues

[Gaboer]

I need help guys, S52B32 OBDI converted + M50 intake

Car is on the final stages of getting it to run but I have this awful idling issue.
Car starts and attempts to hold idle, but the car tends to slowly die after 15 seconds (ish). If I give it gas it shoots up but when it comes down it tries to die again.

I pulled out the icv and pushing it around it keeps trying to move back to the center (is this normal?) and if i put the car to "on" the icv stays at 50% but i can move it up and down with a screwdriver.

I replaced the rubber lines with new ones, so I don't think it should be a vacuum problem. Also, is there any way I can grab codes off the car? I've been having a ton of issues with INPA, and I'm kinda stumped since it's an OBDI car.

It's a silver(grey?) label 506 ECU
Active autowerke 93 octane chip
brand new sparkplugs
m50 intake

I know the gas is old, but I tried a little new gas in but it didn't seem to really solve anything

[Gaboer]

Tried unplugging the MAF and idle stabilized, enough to get the car driveable, although after like 10 minutes of this, the car lost all acceleration + power and struggled to keep above 2mph

[sweet3]

I assume you're running a K&N or some kind of filter that uses oil.
Make sure your MAF sensor plug is on the top. For some reason, I had this similar issue and I fixed it by rotating the MAF plug to the top.
Be sure to clean your MAF, otherwise you might still seem to have the problem, even though it is probably fixed.

[Gaboer]

A bit of a bump but I finally managed to get back from University and managed to get to work on my car again. So, ICV has been replaced with a new one a friend had, and that didn't work. I cleaned the MAF as well as I could, and even rotated the plug to the top but the idle issues are still there. One weird thing, with the maf and o2 still disconnected the idle is fine, but once you put it in first gear it feels like the car has 1hp and almost instantly stalls unless you save it by pushing the clutch back in

[M3PO]

I can tell you that if I unplug my MAF, the car will idle fine but drives like shit. SO that leads me to believe your MAF is bad.