Yes, I was just looking for a faster way to overtake as this could be dangerous if power does not come at the right time. So afterall, I believe best is to step down and then put it in manual.

Someone mentioned about throttle controller here. I actually had these before in my other cars and quite like it. I like it as this is a very good way to get the best power out of your car, does it hurt the gas mileage by much tho?