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How to Remap a Car ECU, Know the Advantages & Disadvantages!

09 April 2025
Cara Remapping ECU Mobil Serta Kenali Kelebihan & Kekurangannya!

Remapping ECU (Electronic Control Unit) of cars has indeed become a trend among car users today. It is claimed to enhance engine performance to be more powerful than the manufacturer's standard. 

So how do you properly remap an ECU? What are the advantages and disadvantages of undergoing this process? For more details, please pay attention to the following review.

How to Remap a Car ECU

When you plan to remap the ECU, make sure you know some important things as follows.

  1. Car ignition limits
  2. Car fuel limits
  3. Car speed limiter limits
  4. Boost controller limits and others

ECU remapping should not be done carelessly, especially if you do not know the limits as explained above. This could actually damage the car's engine. You should first consult with an expert and professional technician. You can visit a workshop or Daihatsu dealer that provides ECU remapping services. 

Overview of Car ECU Remapping

For example, if you want to remap the ECU on your Daihatsu Terios. The standard engine capacity of the Daihatsu Terios is 1,496 cc with a maximum torque of 139 Nm or 104 Hp/ 4,200 Rpm. Cars with the 2NR engine series with 4 cylinders have a fuel consumption of 13 km/liter for city driving and 16 km/liter for highway driving. 

Once you have remapped the ECU, there will be changes in engine torque values and fuel consumption. Your Daihatsu Terios will experience an increase in torque of 16 Hp, from 104 Hp to 120 Hp. 

This improves your engine's performance for maneuvering. Additionally, fuel consumption will become more economical, at 16 km/liter for city driving and 21 km/liter for highway driving.

Read Also: Car ECU: Functions, Components, and Symptoms of Damage

Advantages and Disadvantages of Car ECU Remapping

Before you decide to remap the car ECU, it is best to know the advantages and disadvantages. Here are the advantages and disadvantages you may encounter.

Advantages of Car ECU Remapping

  1. Engine torque increases by 10 to 30% after remapping the car.
  2. Car fuel consumption becomes more economical, even reaching 10%.
  3. Increases car power or HP (Horse Power).
  4. Increases the speed of the car.
  5. Driving acceleration becomes greater.
  6. Provides a new experience when driving the car like a sports car.
  7. Addresses several issues in the car such as weak or intermittent acceleration, and lack of power.

Disadvantages of Car ECU Remapping 

  1. Causes frequent car problems.
  2. Car engine may stall easily.
  3. Shortens the lifespan of the car engine.
  4. Makes the engine sound rougher.
  5. Creates an addiction to frequently remapping the ECU.
  6. Makes drivers more reckless due to increased car power.
  7. Damages the car's ECU.
  8. Sometimes causes new problems, as the calibration of car limits may not match the expected reality.
  9. Increases the potential for traffic accidents if the driver does not wisely control the car's speed. 

That is a complete review of how to properly remap a car ECU, along with the advantages and disadvantages you may encounter if you undergo this process.

Before remapping the ECU, it is advisable to think carefully first. Do not let your good intentions lead to problems with your car. 

Make sure to visit a professional workshop that has special ECU remapping services. You can visit the nearest Daihatsu dealer to consult whether your car needs ECU remapping or not. So you do not make the wrong decision. 

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