ECU Remapping / Chip Tuning: Engine Mapping options for all vehicles

ECU Remap | DPF & EGR Cleaning | Chip Tuning | ECU Remapping Service for Sussex

Engine Control Unit (ECU) Remapping service offered by Evans Parker in West Sussex and Oxfordshire. Evans Parker is an IMI Certified authorised Quantum Tuning Dealer.

Our local technician, Martin, has a wealth of VW/Audi specialist knowledge and we are able to offer Engine ECU tuning for the Audi, Volkswagen, Seat and Skoda brands as well as most other vehicle manufacturers. We can also offer ECU tuning for motorhomes and vans.

The most common ECU Remap will enhance the performance, driveability and fuel economy of your vehicle but we are also able to offer ‘ECO Tune’ remaps where the focus is on economy alone.

We are able to offer our ECU Remapping service at our centre in Bognor Regis which covers Chichester, Littlehampton, Selsey, Worthing & Havant or we can undertake the work at your home or office.

We connect our interface to the vehicles diagnostic port and take a copy of the current file present within the engine ECU.

This file is then sent off to the leading global tuning company with a with a 1000 strong dealer network across 95 countries who work on over 4000 vehicles a month. Their dedicated team of file writers then modify the file according to your specific requirements and send it back to us and we write the file back onto the ECU.

Once fitted you will enjoy up to:

For further information please read below or for a specific performance quote and price for your vehicle please contact us.


When a manufacturer develops a new car they have to take into consideration all of the conditions it may be subjected to in all of the regions in which they intend to sell this model. This means instead of just optimising the ECU’s program or ‘map’ to deliver the best performance or the most fuel efficiency they have to make compromises to the map to take into account these potential differing operating conditions. These could include sub-standard fuels, extremes in temperature and altitude, differing emission laws and even the possibility that vehicle may not be serviced on a regular basis and in accordance with the manufacturers recommended instructions.

ECU remapping is taking a read from the ECU’s processing chip of the vehicles standard compromised map and adjusting various parameters within the map such as fuel pressure, boost pressure (on turbo charged applications) ignition advance and throttle pedal control amongst others to release the true performance from the engine. It is a completely safe process as it is just giving the engine the performance it should have had in the first place before all the compromises were applied to the original programming. Every engine will have its own unique map and by adjusting this we can fine tune the characteristics of the engine; unleashing more power and in many cases reduce fuel consumption too.


ECU remapping will not only improve the engines power and torque figures it will also sharpen the throttle response and widen the power-band. This will make the power delivery a lot more linear, which in turn will make the vehicle feel a lot livelier to drive and the engine more flexible. Frequently, the vehicles power output is restricted by the manufacturer for no other reason than to ensure that the vehicle fits into a class to suit fleet buyers. As a driving enthusiast, you do not need or want such restrictions placed upon your vehicles ECU and its performance therefore you can benefit from the hidden power and torque locked away within your engine management system.

The other main benefit of remapping will be a reduction in fuel consumption. With the extra torque especially at the bottom of the rev range you will see a fuel saving as it will require less throttle input to maintain motorway speeds, you can drive in a higher gear at a slower speed as well as helping significantly when fully laden, towing or on gradients and even in start stop traffic.


Many see the modern crop of Turbo charged diesels as the future of road car tuning. Even in North America, a nation famed for its love of the petrol engine is starting to come around to the benefits of turbo diesel passenger cars in particular. These engines offer fantastic potential for reliable low cost tuning without removing any of the appeal of buying and running a turbo diesel powered vehicle, such as economy, reliability and longevity.

Turbo charged petrol engines have always been regarded as the sports flagship engine for good reason. They boast far higher power & torque figures than a non-turbo charged power-plant with similar displacement and are usually fitted to the manufacturer’s flagship models. They are also ideal candidates for remapping as the ECU also controls the wastegate (turbo boost pressure control).

After your ECU upgrade to your turbo charged diesel engine, you will enjoy:


The normally aspirated petrol engine, whilst not being the easiest of engines to tune, can still benefit from a 10-15% power increase with added torque by careful reprogramming of various engine parameters within the map. Parameters such as the fuel and ignition curves can be fine tuned to give better power & torque output. On some engines the camshaft timing can also be tuned within the map, giving additional improvements.

In many cases, ‘after market’ tuning items such as free flowing exhausts, high flow air filters and re-profiled camshafts can only be fully utilised by the engine once the necessary adjustments have been made within the ECU. Careful re calibration of the correct maps can unlock the potential of your new engine parts. Further power gains may also be available when a higher octane fuel is used, allowing for more advanced ignition timing.


We do not change any hardware in a vehicle, we just modify the operating parameters in the ECU’s program or ‘map’. In many cases the map stored on the ECU’s processor can be accessed via the on-board diagnostics port (OBD) in the vehicle, normally found under the dashboard. In some newer models the ECU will have to be removed from the vehicle and the casing opened, our technicians will then use specialist tools to read the original map straight from the processing chip.

Our IMI professionally certified Quantum technician will then upload the original map to the map writing team who will adjust the parameters to maximise the performance, fuel economy or a clever blend of both. Depending on the vehicle and ECU type the remapping process can take under an hour and if at any time you wish to return your vehicles ECU to its original default settings, this can be done easily as we always keep a copy of the original software as a backup.

Evans Parker works to the highest standards in all aspects of operation, including our business ethics. You can be assured of the following:

  • We will not overstate our figures to make them appear better than our competitors
  • We will not quibble over our 30-day money back guarantee
  • We will not raise your expectation of fuel savings to an unreasonable level
  • We will tell you if the improvements on your car are minimal and therefore not worth doing
  • We will never pass on or sell our customer data

For an estimate on power and / or economy gains including a price for installation please call us on 01243 914914, email us or WhatsApp us with your registration number or fill in the short form below.