the ecu uses the wideband signal - not too sure what goes on behind the scenes with that lol.
We tried disconnecting the MAF last night and the car seemed to run a bit better... hopefully it will be that easy.
1992 BMW 325i (CHUMPCAR #296 - build in progress)
1992 3.0L M52 325i (ex-daily driver - track car only)
2002 330Ci (ex-daily driver - sold!)
Check out my e36 track car build