Qsilver7 posted a great info page a few threads down covering the modes that the E70 uses for the cooling system. Hopefully he will chime in with it but I will go look and see if I can find it.

Basically its has 4 modes.

Economy - Very high temperatures with little room for coolant temp spikes. This gives you the best gas mileage and allows the car to do the best emissions wise.

Normal - The coolant temp is lowered to give a bit more room for coolant temp spikes and more power.

Performance 1 - The coolant temp drops drastically and power goes up even higher but mpg goes way down.

Performance 2 - Max cooling and max power.

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