Rolling Road Dyno

Remapping or Chip-Tuning

After being asked frequently by our regular customers to provide a remapping service, we have installed a Dimsport 1000 BHP Rolling Road in our workshop, launched our own remapping facility. Remapping can repay for itself due to improvement in economy while cruising and create significant performance increases in both power and torque of up to around 35%, sometimes even more!



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 Diagnostics to offer a remapping 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 been and continue to recieve ongoing training in the the reading and remapping of modern engine ecu units, having been tuning vehicles since the days of carburettors it is actually a process that comes naturally to us. Being able  to change things likeignition timing without having to use a spanner is quite brilliant! We are able to tune for increased power, ecconomy or a balance between the two, you the customer decide. Our Rolling Road confirms the outcome.

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

Our Rolling Road has changed Everything

With our own Rolling Road (actually called a Chassis Dynamometer) we can accurately measure the actual performance of any two or four (4x4) wheel drive vehicle (and 3 wheel drive also if the vehicle has two drive wheels) Following this we can examine the data, including Wideband o2, pressures, including boost and temperature and just about any other data that we like in association with the output from the rolling road to provide the information to adjust the many possible parameters that may need to be altered to give the required performance increase, the dyno allows us to check and test the results and make further changes until the work is complete and a final power run is completed to check the results.

Power Diagram from Rolling Road

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 instal and configure the correct software version as required.

Aftermarket ECU's

We are able to supply and fit ECU's from the likes of Emerald, Simtek, Motec, Gems, Alcatek and any other ecu that has the relevant software available. We regularly remap Subaru's, Honda's, Ford Cosworth and Lotus vehicles with aftermarket ecu's. Call us for further information.


Classic Cars

We are happy to tune traditional engines and Eric has been for over 35 years, ranging from single cylinder motorcycles up to 8 x twin chokes on Aston Martin v8's


Just some of the many vehicle makes that we regularly remap