All manufacturers supported
ECU Remapping in
Swansea, Carmarthenshire & South Wales
Established as the number one company in Swansea, Carmarthenshire & South Wales for ECU remapping, Drop The Box Performance has built a reputation over the years for the highest quality service, top performing remaps and affordable pricing.
Find your vehicle below to see your estimated gains:
Our Services
Performance ECU Remaps
We can help you extract the most performance out of your vehicle through a Stage 1 or Stage 2 remap. Optimise fuel consumption and unlock extra BHP and torque.
Economy Focused Remaps
When fuel efficiency is a priority, you can rely on us to help you achieve the best performance from your vehicle. Diesel Vehicles only.
Adblue, DPF & EGR Solutions
If you're being bothered by Persistent Adblue or DPF warning lights, limp mode & Non Starts - We can resolve these problems quickly with our specialist solutions.
Car Remapping in Swansea and South Wales – Drop The Box Performance
Welcome to Drop The Box Performance, the leading experts in car remapping in Swansea, Carmarthenshire and South Wales. We specialise in ECU remapping and vehicle performance tuning, helping you get the very best out of your engine — whether you’re looking for more power, better fuel efficiency, or a smoother drive.
As a
mobile remapping company based in Llanelli, we come directly to you anywhere across
South Wales, providing dealer-level results at your convenience. With
genuine tuning software and the latest diagnostic equipment, our team delivers safe, reliable, and high-performance remaps tailored to your specific vehicle.
Mobile Car Remapping Across Swansea, Carmarthenshire and South Wales
Whether you’re in Swansea, Cardiff, Carmarthen, Neath, Llanelli, Bridgend, or anywhere across South Wales, our mobile technicians come directly to you. You don’t need to visit a garage — we bring the expertise, tools, and technology to your driveway, workshop, or business premises.
Book Your Remap Today
If you’re ready to experience smoother acceleration, more power, and improved fuel economy, get in touch with Drop The Box Performance today. We’re proud to be the top choice for car remapping in Swansea, Carmarthenshire and South Wales, offering expert service and unbeatable results.
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Call us today or
book your remap online to discover how we can transform your vehicle’s performance.
Benefits of Remapping:
More BHP & Torque
You can expect anywhere up to 40% more power from getting your vehicle remapped by an expert.
Better Fuel Economy
Most of our Stage 1 remaps will benefit the fuel economy but if fuel economy is your main goal we can focus the remap on fuel efficiency.
Enhanced Throttle Response
Remapping the ECU can improve throttle response, making the engine more responsive to the driver's input. This can lead to a smoother and more enjoyable driving experience.
Preservation of Manufacturer Safety Limits
We ensure that the modifications stay within safe limits set by the manufacturer, protecting the engine and other components from potential damage.
Stage 1
The same car - just better! No hardware modifications are required for Stage 1, this tuning stage will give you a healthy increase in BHP and torque whilst remaining within the manufacturers limits for safety.
Stage 2
Stage 2 is when things start to get a little more serious - This tuning stage will require some hardware modifications to the vehicle usually to the exhausts / airflow system depending on the vehicle.
Can't recommend enough. Brilliant service provided and very pleased with the results. The technician arrived on time and went straight to work on the car answering any questions I had. Will definitely be returning for a tune on my MX5.
Samuel Roan
Can't fault the company, transformed the performance of the car, excellent communication and very reasonably priced compared to other local companies. Will definitely use them again in the future. Many thanks
Geraint Thomas
Great remap from Darren. The vehicle is much nicer to drive with power delivery and gear changes much improved. Very impressed with the process, where the map is installed and you then test it with Darren whilst driving. Very thorough and professional. Highly recommend
Richard B
Steps to book in for your remap:
1. Get your quote
Find your vehicle and complete your information on our quote request form. A member of our team will reach out to you within 24 hours.
2. Book in
We'll schedule your remap appointment, as most bookings can be accommodated within 1-2 weeks of your inquiry. Our slots fill up quickly each week, so don't hesitate!
3. Get your remap
On the scheduled day, we will confirm your appointment and carry out the upgrade of your vehicle's software. After the upgrade is completed, we will take the vehicle for a test drive to guarantee your satisfaction!
Our Remapping Process
Step 1
Initial inspection
We'll do a full inspection of the vehicle to make sure it's in good working order and suitable for remapping.
Step 2
Read the ECU & remap
We'll use one of our industry leading tuning tools to read the file from the ECU and send it to our professional calibrators for tuning.
Step 3
Transfer the new tuned file
We will load the new optimised ECU file back onto your car's ECU, then we'll make sure everything is ok before taking the car for a test drive.
Step 4
Customer satisfaction
With all of our Stage 1 remaps we offer a 100% satisfaction guarantee. If you're not happy with the changes we will revert your car back to stock.
BMW Remaps in Swansea, Carmarthenshire & South Wales
See gains of up to 20% BHP from a Stage 1 remap on your BMW.
Volkswagen Remaps in Swansea, Carmarthenshire & South Wales
See gains of up to 23% BHP from a Stage 1 remap on your VW.
Audi Remaps in Swansea, Carmarthenshire & South Wales
See gains of up to 25% BHP from a Stage 1 remap on your Audi.
Ford Remaps in Swansea, Carmarthenshire & South Wales
See gains of up to 23% BHP from a Stage 1 remap on your Ford.
Mercedes Remaps in Swansea, Carmarthenshire & South Wales
See gains of up to 30% BHP from a Stage 1 remap on your Audi.
