I've had my 1.5 for a few months now, and just today accidentally discovered "Performance" when tapping the battery on the VDS. I was almost home and only had 35 miles of range left so didn't want to push it. Before I allow myself to get all excited, does this actually do anything noteworthy?? The skeptic in me says it tweaks a few parameters but doesn't increase power to the motor noticeably. The optimist wants to say zomg moar power!