Hello there. I have a model Opel Astra H with SIMTEC 75 ecu and I want to remap. I couldn't understand the map names in Ecm Titanium. Can you tell me what these map names mean? I attach the ecu file.

Map names:

-injection at part throttle (1)
-injection (Ext.) (2)
-injection (Ext.)#1 (1)

-spark advance at middle throttle (5)
-spark advance (EXT) (5)