Cars with computers.

Since the days of cars that were mechanical there were little tricks you could do to achieve some goal with tuning your car. I recently got a pre-owned mazda 3 sport and while you're always told it works amazing having never seen it - a few months of driving will certainly ensure that a few problems rear their heads.

My particular issue was with the acceleration of the car. With the advent of Electronic Control Units (ECU) tuning has become pretty easy and also ensures the car creates a profile of what is needed for its particular environment. Mine had come without being reset from its previous owner and I found it to be quite sluggish when accelerating, in a country where the traffic is neck and neck that can be a good thing but when you need to move in the same traffic it can be a hazard to others. So I did some research and found that you could simply reset the ECU and ensure that the car creates a new profile for its various metrics. For the Mazda  I needed to unplug the battery, let it sit for a few minutes, reconnect and let it run for 20 minutes without the AC then 15 minutes with the ac. After going through this process I noticed a huge improvement with acceleration.