The power Pedal can be set to Eco modes for economy or even locked in an eco mode when another driver is using the vehicle.

Got the Tunit....if I told you it took less than 3 minutes to fit...piece of cake. Have it on level 5 and will leave it there as there is no smoke and there is a noticeable improvement in performance (esp mid range...oodles more torque). Where the tunit does differ from the rest is that it is much more refined...I have had previous plug and plays...all these products were either full on or off which is not what I wanted for the Merc, which now is much more responsive. Regards David Received a week later... Nick Have had the tunit for one week so the honeymoon period is over...my thoughts? Its like driving a CLS 500 with the fuel economy of a diesel. I have left the module in position 5...the result oodles of torque...snappier acceleration and just all round a better car and would you believe smoother. What Merc are at with the standard ECU Ill never know. Tunit is streets ahead of previous plug and plays I have used.