Hi there, disconnected the battery on my ED30 to leave it on a charger while I was away. The car seems to drive differently now, not really less power but the character of the delivery is definitely different. Certainly has less of a whump when the turbo comes on boost but this could be that there was more lag before... This is a slight change, 5% max but noticeable. Anyway, cars is not (to the best of my knowledge) mapped so is t normal for the ECU to behave differently after a battery disconnect?