What is ECU Remapping?

What is an ECU? What is a Remap? How does a remap work?

ECU Remapping is the process that involves modifying the files and parameter data that is held within the ECU. The ECU has a whole table of data parameters which it uses to make real time adjustments whilst the engine is on. By ECU Remapping an ECU, we actually change the parameters within the data table, allowing more flexibility for the particular engine parameter. For example, we can modify the boost control parameter, allowing the turbo to work at a higher efficiency rate by increasing boost pressure.

ECU remapping & chip tuning is the modern day method of tuning a car for performance & economy. No car tune is complete without an ECU remap.

Worcester ECU Remapping has the knowledge, expertise & professionalism to safely tune your vehicle. Unsure? Click here to see what our customers have to say about us…

ECU Tuning on 01905 420111

ECU Remapping Explained…

All modern vehicles are fitted with an Engine Control Unit or ‘ECU’, this is the engines ‘brain’ and it has evolved from a simple circuit that controlled the ignition to a very sophisticated computer that now controls virtually every aspect of the car’s engine, from the amount of boost the turbo will create, when and how much fuel is injected, when the spark plugs fire, what pressure the fuel rail runs at, Exhaust Gas Recirculation or EGR, and Diesel Particulate Filter or DPF function and regeneration.

When car manufacturers programme this ECU to control the engines function they have to be very liberal with the setting, taking into account the various markets that the car may end up in, the lack of maintenance certain owners will embellish on the car, poor fuel quality etc, etc.

However car manufacturers will also down tune certain cars so that they fit into certain market categories as well as certain insurance categories. Many times a lower model will be a down tuned higher model, using exactly the same engine components but simply down mapped at the factory to produce lower power.

ECU remapping is the art of subtlety tuning the engines running parameters to achieve a higher state of tune. An ECU that is well remapped will result in a car that not only produces more power and torque it also returns a higher MPG and will drive smoother and be far more responsive that its standard counterpart.
Worcester ECU Remapping have the software, tools, technology and perhaps most importantly, the tuning experience to fine tune and remap your vehicle\’s ECU to give it truly remarkable results.

Sound like bold claims? At Worcester ECU Remapping, we are prepared to offer all our ECU Remapping and chip tuning on a 100% no quibble guarantee. If you’re not 100% satisfied with the result of your ECU Remap we will return your car to standard if brought back to us within 14 days and we will give you a full refund. (T&Cs apply)

Please note: The advice we give to our customers is always in their best interest. We always advise customers to take great care and consideration when choosing an ECU Remapping company.

Call now for Worcester ECU Remapping on 01905 420111 or click here to fill out a form for a callback.

Our Simple Three Stage Process

Our technician reads the ECU file from your vehicle and saves a copy for modifying. It can be done at our workshop or a location of your choice.
The ECU file is then sent to and then worked on by Specialist Engine Tuning Experts at our Head Office. A customised map is prepared for your vehicle.
The remapped ECU file is modified & sent back to the technician and uploaded back onto your vehicle’s ECU. Your vehicle remap is complete and you’re ready to go.
Increase Fuel Economy & Reduce Fuel Bills By 20%

Tired of excessive fuel costs? Our Economy Remapping will provide your vehicle with increased power & torque.

Economy ECU Remapping

Increase Power, BHP & Performance By Up To 30%

Our Performance Remaps will help increase power, performance and torque where it matters! Click below…

Performance ECU Remapping

Smoother & Better Power Delivery For All Vehicles

Once your vehicle’s been remapped the transformation in bhp, power, performance and torque is massive.

Remapping Services

Petrol Performance ECU Remapping & Engine Tuning

Petrol ECU Remaps & Petrol Tuning for turbo petrol engines and non-turbo engines. Click below for more info…

Petrol ECU Tuning

Diesel Performance ECU Remapping & Engine Tuning

Diesel Engine Tuning & Diesel Engine Tuning for turbo diesel engines. Economy and Performance Remaps.

Diesel ECU Tuning



My Alfa Romeo 159 immediately felt more lively and definitely more responsive with much more mid-range power. Average mpg used to be 42mpg and is now 51mpg... So much happier with my fuel bills now! Impressive stuff!
Remap your petrol and diesel Alfa Romeo
Andrew Scholes
I want to say a big thankyou to the remapping team here for their expert Engine Tuning  and for ECU Remapping my BMW 520d last week. The only disadvantage is that I'm driving like a teenager again with all the extra bhp and torque! I know I'll see the benefits in fuel economy and increased MPG, when I start driving normally...Thanks again!
Remap your petrol and diesel BMW
Richard Blakeley
Originally met these guys at The Autosport Exhibition @ The NEC. Was thrilled to find out they were quite local to me. Can’t say enough how impressed I am at the success of the remap to my Audi A4 170bhp. The difference is phenomenal… sooooo smooth and the power comes so quick low down.
Remap your petrol and diesel Audi
Bradley Pates
Since you re-mapped my VW Passat it’s just like driving a different car, the power is amazing and the performance as a whole is second to none. Every time I accelerate it's like pressing a warp drive pedal. And I’ve also noticed the MPG has gone up considerably. Great Performance Remapping.
Volkswagen ECU Remaps and Engine Tuning for VW
Alan Williams
Mercedes C-Class - DPF Removal + PERFORMANCE Remap - Would recommend your service to anyone, you’ve completely changed the characteristics of the car – it’s faster, smoother and funnily enough, even cheaper on fuel! Will definitely be back in contact when it’s time for a change. Once again, thanks.
Remap your petrol and diesel Mercedes
Matt Crabtree
Ford Mondeo - Diesel ECU Remapping - This is how my car SHOULD always have been! Great blokes. Punctual and professional, cant ask for any more. Great price too. Not too expensive and you know you’re paying for quality!  So pleased, thanks so much!
Remap your petrol and diesel Ford
Josh Cleverley