hey guys, I recently bought a 1997 540i with a turbo set up. I'll include what's done to it below. It was running fine, until it got colder out it seemed & the only way to get it running was with Starter Fluid. I plugged my laptop into it and downloaded MegaSquirt 3 and accidentally flashed the ECU being a dumba*s. I'm not the smartest with tuning and this is my first time attempting too (def wrong car to learn on) and I was wondering if anyone would be able to help me out to atleast get it running, that way I can run auto-tune through MS from there on until I get it actually tuned. Yesterday, I was going through the software and attempted to calibrate the sensors, as well as messing with the Crank Pulse Width & adding more fuel. So far, we got it to crank healthy but it seems to wanna run and when it catches itself for that split second it sounds rough.

Here's what's done to it that I know of:
Megasquirt ECU
Comp Turbo
LS1 Coil Packs
Bosch Injectors
450 Walboro Fuel Pump
AEM Meth Kit
ARP Head Studs