I know the using the O/D accounts for better gas mileage, but what about power? I've got a 98 2.5 dura w the button on the atx shifter...do you use it or not?

98 SE sport 2.5 dura atx-silver painted silver dash and red under the hood mesh grill, knauberized, aftermarket fogs, cone filter, alpine head unit 50x4