Custom ECU Remapping & Tuning

ECU Remapping in Slough

Unlock Your Vehicle’s Full Potential with Onyx Performance

Professional ECU Remapping in Slough

At Onyx Performance, we specialise in ECU remapping for a wide range of vehicles, helping you unlock more power, torque, and fuel efficiency. Our expert team provides custom ECU tuning, whether you’re looking for a performance boost, better fuel economy, or a more responsive drive.

With our state-of-the-art rolling road dyno in Slough, we ensure precise and safe remapping tailored to your vehicle’s specific needs.

What is ECU Remapping?

ECU remapping, also known as chip tuning, is the process of reprogramming your car’s Engine Control Unit (ECU). The ECU is responsible for controlling key engine parameters such as fuel injection, ignition timing, turbo boost pressure, and throttle response.

Manufacturers often limit the power of a car to meet emissions standards and various global regulations. With a custom ECU remap, we adjust these settings to unlock your car’s full potential safely and reliably.

Tuning Gain Calculator

Types of ECU Remapping We Offer

Performance ECU Remap

Designed for enthusiasts and performance-driven drivers, this tuning option increases horsepower, torque, and throttle response, making your car significantly quicker and more enjoyable to drive.

Economy ECU Remap

Perfect for diesel vehicles and fleet owners, this tuning focuses on optimising fuel economy, reducing fuel consumption, and improving throttle response without sacrificing reliability.

Stage 1, Stage 2 & Stage 3 Tuning

Stage 1 ECU Remap – Safe and effective software-only tuning with no hardware modifications required

Stage 2 ECU Remap – Requires additional performance modifications such as an exhaust system, air filter, and intercooler

Stage 3 ECU Remap – Full high-performance tuning, including hybrid turbos, uprated fuel systems, and more

Benefits of ECU Remapping

– Increased Power & Torque – Enjoy a significant performance boost with enhanced acceleration and throttle response

– Improved Fuel Efficiency – With optimised ECU settings, you can achieve better MPG and reduce fuel costs

– Better Driveability – Enjoy a smoother, more responsive drive with improved gear changes and acceleration

– Safe & Reliable – Our ECU remaps are designed to enhance performance without compromising engine longevity

– Customised to Your Needs – Choose between performance remapping, economy tuning, or a balance of both

– Works on Most Petrol & Diesel Cars – Suitable for turbocharged and naturally aspirated engines

Customer Reviews

    
 
 
       Posted on Google  
   
   Mark Wiltshire 
 
 
 
 Trustindex verifies that the original source of the review is Google. Professional yet friendly, very helpful would recommend 👍
  
 
      Posted on Google  
   
   Paul Forrester 
 
 
 
 Trustindex verifies that the original source of the review is Google. Nice refurbishment of my alloys
  
 
      Posted on Google  
   
   Noel Kerins 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service, great quality job on 2 of my black alloys. They also did my father & husbands cars too. Great value for money and a special thanks to Ben.
  
 
      Posted on Google  
   
   Jamie Taylor 
 
 
 
 Trustindex verifies that the original source of the review is Google. Had my golf R mapped and tuned to stage 2 very impressed with the work they done Ben and Sam great guys very friendly and very professional would recommend 👍🏻
  
 
      Posted on Google  
   
   DSK 
 
 
 
 Trustindex verifies that the original source of the review is Google. Brought my Audi S3 in for a Stage 3 tune with a bigger turbo and full supporting mods. Things didn’t start smoothly — the Falcon turbo I had fitted from eBay turned out to be faulty and smoked heavily on the dyno.Instead of rushing the job or giving me attitude, they helped me swap it out for a proper Garrett PowerMax and carried on professionally. Then I ran into fueling problems caused by another low‑quality eBay part, and again they took their time, diagnosed the issue properly, fixed it, and made sure everything was right before continuing.After all the setbacks, they still mapped the car, spent a lot of time on it, and didn’t charge me anywhere near what the work was worth.They showed patience, honesty, and real skill. Very happy with the service and the way they looked after me.
  
 
      Posted on Google  
   
   randip 
 
 
 
 Trustindex verifies that the original source of the review is Google. Highly recommended. Fitted my catless downpipe and full exhaust on my Audi RS7. The sound is amazing!

The staff were very friendly and kept me updated at every step of the process
  
 
      Posted on Google  
   
   Dan Simmonds 
 
 
 
 Trustindex verifies that the original source of the review is Google. This is the second time I have used Onyx Performance first time for wheel refurbishment and last time for remap and i would use their services again in the future without a doubt. They are very knowledgeable about what they specialise in, they are polite and you can see they care not only about what their customers want to do but also about what they can offer the customer. Thanks to the OP team.
  
 
      Posted on Google  
   
   Taranjit Lehal 
 
 
 
 Trustindex verifies that the original source of the review is Google. Took my Mercedes C200 to Onyx performance for a stage 1 remap, my car is much quicker and throttle response is much better than before the remap. They also advise you about power and gains and the maps are tailored for your specific car and model, no stress on engine or gearbox. Thank Onyx , Brilliant work.
  
 
      Posted on Google  
   
   Carlos fernandez 
 
 
 
 Trustindex verifies that the original source of the review is Google. Absolutely fantastic service friendly customer service will definitely be going back for further modifications 5 star service do not go anywhere else other than onyx😎🙏🏼
  
 
      Posted on Google  
   
   Aurimas Gercas 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service, recommend.

Book Your ECU Remap in Slough Today

Location: Onyx Performance, Slough, Berkshire Call Now: 01753 439321 to book your ECU remapping appointment. If you’re looking for ECU tuning near Slough, Onyx Performance provides expert remapping services for both petrol and diesel vehicles, helping you achieve more power, better fuel efficiency, and enhanced driving dynamics. Unlock your car’s full potential today with Onyx Performance!

ECU Remapping for Popular Car Brands

We offer ECU remapping for a wide range of vehicles, including:

– BMW – M140i, M240i, M340i, 335d, 530d, M3, M4, M5, X5M, X6M

– Audi – S3, S4, S5, RS3, RS4, RS5, RS6, RS7, TT RS

– Mercedes-AMG – A35, A45, C43, C63, E63, GLC63

– Volkswagen – Golf GTI, Golf R, Polo GTI, Scirocco R, Passat, Arteon

– Ford – Focus ST, Fiesta ST, Mustang 5.0, Puma ST

– Porsche – 911 Turbo, Macan, Cayenne, Panamera

– Nissan – GT-R, 350Z, 370Z

– Land Rover & Range Rover – Defender, Discovery, Sport, Velar

– Supercars & Custom Builds – Lamborghini, Ferrari, McLaren

If your car isn’t listed, call us on 01753 439321 to check compatibility.

5-Star Google Reviews

0 +

Years of Experience

0 +

Customer Satisfaction

0 %

Why Choose Onyx Performance for ECU Remapping?

Custom Dyno-Tuned ECU Remaps

Unlike generic tuning files, our ECU remaps are dyno-tested and custom-calibrated for maximum gains.

Safe & Reliable Tuning

Our experienced tuners ensure that remaps are within safe operating limits, maintaining engine longevity.

State-of-the-Art Equipment

Our rolling road dyno in Slough provides real-world testing and ensures accurate performance figures.

Improved Driveability

Enjoy a more responsive, fuel-efficient, and powerful vehicle after tuning.

Experienced Technicians

Years of expertise in ECU remapping, tuning, and performance upgrades.

Convenient Location

Located in Slough, Berkshire, near M25, M4, and M40, easily accessible from London, Windsor, Maidenhead, and Reading.

ECU Remapping Process – What to Expect

1. Initial Diagnostics

We check for any existing faults, ensuring your car is in good health before tuning.

2. Rolling Road Dyno Test (Optional)

A before-run dyno test records your car’s stock power figures.

3. Custom ECU Remap Installation

Our specialists adjust the ECU parameters to suit your vehicle and tuning goals.

4. Post-Tuning Testing

After remapping, we conduct final diagnostics and road testing to ensure everything is running smoothly.

5. Dyno Testing & Printouts

Get a before & after dyno graph showcasing your power and torque improvements.

Get a quick quote

Drop us a line! or Message us on WhatsApp

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.