What Does Remapping a Car Mean?

Jun 18, 2019

What Does Remapping a Car Mean?

Nowadays, most of our cars will have what’s known as an ECU (Engine Control Unit), which is basically a small computer that controls how the engine works. So, listen up petrol heads, because you’ll be glad to know that there is now a process called ‘remapping’ which is used to improve power and fuel economy of the car. Music to your ears!

Better yet, it only takes 30 minutes due to new technology, it is pretty straightforward to do.

How does vehicle remapping work?

Car remapping process involves changes the manufacturer’s default ECU settings, replacing it with new software which is tweaked and customised to the owner’s preferences, but, it must be within legal limitations. This new software is then plugged into the car’s serial port, also known as the OBD port.

Why should I choose engine remapping?

It is important to note that making any type of modification on a car will come with some risks and downsides, so it is worth bearing this in mind, especially if you decide to go ahead with the process.

Not all cars can be remapped which is generally to do with their age, such as cars manufactured before 2000 don’t feature the remapping software needed to be able to optimise the vehicle’s performance.

Some of the remapping benefits are:

  • Torque and power will noticeably increase.
  • The engine will respond better when the accelerator is pressed.
  • Power delivery is smoother which allows for a safer driving experience.
  • Your miles per gallon (MPG) will improve, reduces the amount of money spent on fuel.
  • Minimises your carbon footprint.


If you decide to remap your car, make sure you go through a reputable mechanic or company as this will help to reduce the risk of anything going wrong. Established businesses will offer a lifetime warranty on the software, providing you with a safety net if you were to have any issues with it down the line.

Make sure you notify the insurance company! Vehicle remapping is altering the performance of a car; therefore, it is classed as a modification even though it is not visible. You must tell the insurance company of any modifications you make to a vehicle or you risk invalidating your policy. This also means the insurer would refuse to pay out in event of a claim and landing yourself in serious trouble for deliberately hiding relevant information or worse yet, being accused of insurance fraud.

Sound like something for you and want to know the cost of car remapping on your vehicle? Simply enter your reg number and we will do the hard work of gathering quotes from local mechanics.


Share this post

Car Repair

Car Repair

Do you need your car repaired? Get quotes now?

Get Quotes