25 Car Customizations That Make You Painfully Uncool

24. Electronic Control Unit (ECU) Tuning

Chip tuning is a process that reprograms the electronic control unit (ECU) chip to make the engine perform better. Located in the injection system, the ECU ship is responsible for controlling the amount of fuel and air mixture taking place. When done by a reputable tuner, chip tuning can improve throttle response, increase the redline, and add power to a vehicle. However, there is always the risk of ruining the engine by asking a fellow wannabe who thinks he knows everything about cars to perform the procedure instead of a professional.