I was looking at the 2 maps for the '05 1K on PowerCommander's website (M325-002 and M325-003). One is for M4 full system and the other for Micron full system, both maps are for stock or aftermarket air filter. I used the 'Map Compare' function of the program and the 2 maps are radically different. I would think they would be close. I am ignorant on fuel mapping, anyone have any ideas why similar setups would have REALLY different fuel maps? Thanks much.....