Performance Remapping

Welcome to the world of Custom ECU Remapping, remapping is the highly skilled art of manipulating the maps with the engine ecu to increase power and / or economy of modern cars. 

While the internet seems to be flooded with companies offering remapping, many of these companies have little knowledge of the way an engine works, never mind what they are actually doing to the maps, ECU maps are very complex and inter-related, altering in one map has an impact upon others. That is why it is important to have your vehicle ECU Remapped by someone that actually knows what they are doing rather than just running software tools with templates to generate a duplicate of a file sometimes found "somewere on the internet"

Our custom remapping process is as follows.

  • Our customer makes an an appointment to have the remapping completed
  • Vehicle arrives at our workshop at the arranged time
  • A full diagnostic scan of the engine management ECU is completed and any problems found reported to the customer.
  • If everything is working properly the current data is downloaded from the vehicle
  • In most modern vehicles through the vehicle communications socket, sometimes by directly communicating with the ECU.
  • The data file is modified, in line with the customers requirements, this is a manual process, so every car receives a unique "tune"
  • The modified file is loaded back to the ECU
  • The vehicle is then road tested and checked
  • A further engine diagnostic check is performed
  • The customer pays for the work
  • The customer takes their car away for what will be an enjoyable journey home.

How does remapping work?

Remapping is a process where the parameters within the tuning and calibration of the ECU are changed to increase the performance and./or the economy of the engine are modified to improve the characteristics of the engine. There are many maps within an engine ECU, controlling things such as fuelling, timing, boost, acceleration, deceleration and many more. Some examples of 3D models of some maps are shown below.


Why don't the manufacturers do this themselves?

You will probably be surprised to discover that the vehicle manufacturers often modify the mapping of their ECU's for marketing reasons, to differentiate between models and specifications for example, with the same engine often being fitted to numerous models of vehicle there has to be a performance difference between their low-specification, regular and "sports" models. This is frequently achieved by de-tuning the cheaper models.

Manufacturers also have to comply with very strict emissions requirements and tests that are performed to meet UK and European testing parameters, these often mean that between 1,700 rpm and 3,000 rpm the engine output is deliberately held-back to pass these tests. Having a negative effect upon both performance and economy. 

Why has it taken until now for Turner Performance to offer this service?

Having checked the service and files of many of the companies offering remapping services, we were until recently unhappy with the quality of the remapping that is available in the UK. It was for this reason alone that we chose not to offer this kind of chip-tuning or remapping service.

We were and I am sure that many people will be surprised to discover that many of the people producing "remapped" files actually have very little understanding of the way an engine works, they are just programmers that have picked up (often copied) the work of others, who often also lack the necessary understanding of how an engine works or its requirements.

We have now developed a relationship with someone we believe to be a remapping expert in the true sense of the word. Over a period of time they have proven themselves capable of not just remapping the ECU to our customers requested parameters, they have also successfully recovered numerous ECU's that had been damaged when updating software and even resolving the problems caused by other so-called remappers.

We believe that the remapping service that we provide is second-to-none anywhere.

ECU Corruption and Incorrect Software

We are also able to repair the damage to the "flash" software held in the Engine ECU, this can be caused by all sorts of issues, problems during software updates and remapping being the most common examples. Even if there is no communication with the engine ECU we can often still resolve the problem. We carry out this kind of work on a regular basis for both trade and retail customers. Send your ecu to the address on the Contact Us page and we will investigate the problem and advise how we can help. Problems like this can also happen when the "Chip" that stores the data becomes damaged, we carry most of the common chips and flash memory in stock and can install and configure the correct software version as required.