Can ECU tuning damage your engine?

What is ECU tuning?

Engine Control Unit(ECU) is controlling how the engine works, remapping your ECU can release the potential power of your engine.


Why would ECU tuning is possible?

What factors would manufacturers consider when programming their ECUs? First, they have to consider the driver’s behaviour, and they will assume the driver doesn’t know anything about car, like the correct cold start/cool down procedure and service the car regularly and ect, so they tune it for the worst scenario, detuned to increase reliability and increase fuel economy. Second, some will detune their engines to create lower-spec models and consider different climates, laws restriction like emission standards, and varying quality of fuels.


Is it safe?

We have explained the reasons why ECU tuning is possible, it is safe if done right by experencied experts. No two cars are the same, no two engine are the same. Instead of dressing your car in one-size program, reading file and make change on it, it is better fit for your car. However, please bear in mind that with the increased power, you should getting more stress on the engine and drivetrain if you drive around at full throttle all the time, and heavy right foot will use more fuel, whether it's remapped or not. The parts are aging by the time, the car will stop one day even you don’t remap it, and if you don’t take care of it when it needs to, the day come earlier. You can check another post Maintenance(MUST READ) for better understanding how to take care your car.