I have been looking at calibration files for the 1995 B-Body; post TSB regarding chuggle/surge or AIR pump. And have noticed that it seems like the TOW package vehicles do not use the MAF. Even before the TSB the tow package Buick does not use the Mass Airflow Sensor. I think the '95 Impala uses the MAF, but not my Roadmaster. Anyone know the thinking behind that?