Just disconect the Maf and its should automatically start using the Map.

The file i send you, its has NO fuel adjusment at all, just idle and timming you have to do the fuel, and it uses the same delphi maf same as a 5.3 LM7 Ls engine, calibrated diferently (Stock) for...

Aksl, im NISANDA the one that send you the file, and its from a Silverado 2001 with the 5.7 vortec not a Express Van, in mexico there made 5.7s with the gen3 411 PCMs.

The file i send you its all...