• Up to 70% More Power
  • Up to 50% More Torque
  • Up to 15% Fuel Saving
  • Improved Drivability
  • More Responsive
  • Quieter and Smoother

We at CMS can optimise the performance, economy and drive-ability of most engines with a custom Remap. The CMS remaps we offer are:

  • CMS Red ReMap – High Power designed to unleash the full potential of your engine. Installed on either petrol or diesel vehicle providing extra power and torque, ideal for heavier loads, better acceleration, wider torque window, or simply to enjoy your vehicle.
  • CMS Blue ReMap – Power/Eco Blend. The most popular choice, with a combination of power and economy in virtually all turbo diesel engines. This offers a better drive with performance and reducing fuel consumption.
  • CMS Green Remap – Maximum economy in turbo diesel engines. Benefit from additional performance and improved economy. This is a very popular with large fleet owners, where the improved mpg really counts.

Can’t find your vehicle? Use the Contact us page or Call us on 0118 967 7777

Who are we?

We are fully qualified and IMI certified in advanced Remapping and one of the top ReMapping company’s in the South of England. We will advise you on the best Map to Tuning Box to provide the optimum solution for you. We carry out a full diagnostic check and pre/post test drive to ensure we’re completely happy with the results. Prices start at less than £250. Call us for a quote and for any special offers.

How do we do it?

Here at CMS we install remapped tuning files directly on to your vehicle by taking the parameters that the original manufacturer set and enhancing them to obtain the best solution. An ECU file contains 100’s of tables where we can make changes to adjust fuelling, boost, injection, torque control, air fuel ratios, speed limiter, rev limiter, DPF control, EGR function, etc, etc.

Is a ReMap safe for my vehicle?

Our CMS remapping process enhances and optimises the power of the engine within safe limits, not beyond them. Extra power will also result in fewer gear changes, which might actually reduce overall wear. All  engines are different as to how much it can be safely enhanced in a remap, but a good remap from CMS will never get close to the limits of component failure.

Why don’t the manufacturers do it?

Manufacturers generally sell vehicles that cover various markets, with different tax and emissions regulations, different climates with extremes of heat, cold, humidity, and fuel qualities, operating altitudes etc. Manufacturers have to make compromises in the vehicles operation to cover this. Virtually every vehicle on the road has a tuning set-up that is a compromise. We can safely optimise the engine tuning and outputs. Some manufacturers do offer remapping under a separate performance brand, for instance Mercedes ReMap under their Brabus brand.

Get more with a CMS ReMap/Tuning Box

You may find that other Remaps quote higher output figures than us. The reality is quality ReMaps will generally have similar outputs to each other so beware of excessive gains, as they may be pushing the vehicle beyond safe limits.

Save Fuel with a CMS ReMap/Tuning Box

Currently we can’t save both your pocket and the planet, but when you have a CMS Green Remap you can experience substantial fuel savings, most turbo-diesel vehicles can see a 10-15% fuel saving. When combined with a change in driving style to take advantage of the extra torque and driveability, then much more is possible. However, use the extra power, drive hard and experience the improved acceleration or higher speed and savings will be minimal – though you may have more fun!


We are very confident that your CMS Remap or Tuning Box will improve your driving experience and save fuel. But, don’t take our word for it; try it for 30 days and if you are not delighted with the results, simply return to your vehicle to us and we will return the Map back to its original state and give you a refund.

CMS Rolling Road/Dyno

Should you want your vehicle tested, we have our own Rolling Road/Dyno and also offer packages to include pre/post power/economy runs.

If your vehicle is not on our look up, not all are, please call us to find out what we can do.

Enter your Reg on our website to see what we can do for your vehicle, or contact us directly

We can also provide a payment terms, please contact us to find out more.

Book in now for a Personalised and Tailored ReMapping Serviceby calling our workshop in Reading on 0118 967 7777. We cover the whole of the Berkshire area.