- Covering All Sussex Areas
ECU Tuning
his stuff. Had an amazing drive on the way home.
Would definitely recommend NXT!"
- Dale Robins

- Covering All Sussex Areas

search your gains and get a quote
EXCELLENT Based on 125 reviews Davy CJune 11, 2025Trustindex verifies that the original source of the review is Google. Great service.James helps and explains everything what’s going on . I’m very happy with the job he did .I would recommend NXT performance .thx James stephen langleyJune 10, 2025Trustindex verifies that the original source of the review is Google. Had a great experience using NXT for remapping work done on my Mercedes c350 cdi. James was extremely helpful and polite and certainly knows his stuff. Won’t hesitate to use again for other cars and will certainly recommend to friends. Robbins DhoowooahJune 7, 2025Trustindex verifies that the original source of the review is Google. Amazing service. Car responds better than before. Good pickup on low revs which was not the case before and very soft linear acceleration which is what you need for daily use. Would highly recommend Paul HillJune 6, 2025Trustindex verifies that the original source of the review is Google. James has just detuned my F10 M5 for me and the service was absolutely brilliant. James modified the file he put back onto my car with a few bits I wanted deleted with absolutely no issues what so ever. 10/10 service will definitely recommend and use again, you won't be disappointed. Thanks James for everything. GiloMay 29, 2025Trustindex verifies that the original source of the review is Google. What a difference the NXT performance remap has made to my BMW M5 F90. It was a seriously quick car before, but now, together with the gearbox tune by NXT, the car is simply ballistic. Both tunes were done at the same time in a few hours. James is a really personable and knowledgeable guy who remapped the car at home for me, all at a very reasonable price and at the agreed-upon time; great customer service all round. I’m very happy I chose this company, and highly recommend NXT Performance! john eldredMay 28, 2025Trustindex verifies that the original source of the review is Google. Had my car remapped dpf and adblue james was absolutely brilliant would highly recommend thanks again Liam SmithMay 27, 2025Trustindex verifies that the original source of the review is Google. Great customer service! The detail of work is unmatched! He took his time and kept me in the loop with any issues my car had. Had a stage 1 remap done to my bmw and what a difference it makes! Highly recommend! Tommy FayMay 20, 2025Trustindex verifies that the original source of the review is Google. Fantastic service on time explain what happens would highly recommend Wayne FeneganMay 16, 2025Trustindex verifies that the original source of the review is Google. Hi James. Just wanted to give you some feedback about the beemer. Very pleased with the quality of Lee's workmanship, with the remap, and with how the car performs. As you mentioned, the power is quite linear in the way it builds which is good, there's some nice induction noise and there's some burbling at slow speeds. I've even had a few loud pops when pushing hard which was unexpected. Overall very pleased, so thank you very much for all your help. You might be pleased to know that the car is booked in next week for a new timing chain as per your advice. Thanks again. Frank PusMay 8, 2025Trustindex verifies that the original source of the review is Google. James was polite and reassuringly professional. He was able to make an appointment at a time convenient to me and carried out the required work at my home address. No mess, no fuss just good workmanship. James was able to increase the performance of my wife's car by approximately 40%. This made her pretty happy. Many thanks.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Car Remapping in Sussex
Car Remapping & ECU Tuning Specialists
Welcome to NXT Performance, car remapping Brighton, your ultimate destination for high-quality car remapping services. At NXT Performance, we understand that your vehicle is not just a mode of transportation, but also a passion and an extension of your personality.
That’s why we offer cutting-edge car remapping solutions that are designed to enhance the performance, power, and driving experience of your vehicle, whether you’re on the road or on the track.
Our team of experienced professionals uses the latest technology and tools to provide you with the best possible results, while also ensuring that your vehicle’s reliability, fuel efficiency, and longevity are not compromised. Whether you have a sports car, a family estate, or a commercial vehicle, we have the expertise to unlock its full potential.
Sussex Car Remapping




Custom Performance tuning
Tailored for you
✅ No generic maps
✅ Full money back guarantee
✅ Google 5 Star rated business
STOCK IS JUST THE
STARTING POINT
TAKE IT TO THE
NXT LEVEL
DPF, AdBlue & EGR Solutions
We offer professional solutions to disable or remove problematic DPF, AdBlue, and EGR systems—eliminating limp mode issues for good. Enjoy restored performance, long-term reliability, and improved fuel economy that lasts.

If you're not completely satisfied with your remap, we offer a full refund—no hassle, no fuss.

Experience enhanced throttle response, improved fuel economy, and a smoother, more powerful drive.

We offer professional solutions to disable or remove problematic DPF, AdBlue, and EGR systems—eliminating limp mode issues for good. Enjoy restored performance, long-term reliability, and improved fuel economy that lasts.

Our knowledgeable and friendly team is always on hand to provide support and answer any questions.
At NXT Performance, we specialize in custom ECU tuning. Unlike off-the-shelf or generic maps, every file is meticulously crafted from the ground up, tailored specifically to your vehicle. Our bespoke approach allows us to tweak and modify each tune to meet your exact preferences, delivering optimal performance and efficiency.
Thank you for choosing NXT Performance, and we look forward to helping you take your vehicle to the next level!

Tailored to every vehicle

Most cars tuned within the hour
- Increased Fuel Economy
- Improved Performance
- Lower Emissions
- Cost Effective Solution
- More Responsive Engine
- Improved Acceleration
- Adjustability for Fuel Economy and Performance
- Friendly, highly experienced staff
Schedule Your Appointment Today
Your Car remapping Specialists
from your family car to your sports car and everything in between, we will take good care of your pride and joy.
Car remapping is a process of electronically tuning a car’s engine to optimize its performance. It involves reprogramming the vehicles’ Engine Control Unit (ECU) to modify the timing and other parameters that control how the engine runs. This can result in improved torque, power, acceleration, and fuel economy.
Car remapping is a relatively simple process that is usually done with a specialized computer. First, the car is connected to the computer via diagnostic port. Then, the technician will upload the car’s existing ECU map and modify it according to their specifications. Once the desired modifications have been made, the new parameters are saved onto the car’s ECU, replacing its old map.
Car remapping offers many potential benefits for the car owner. It can improve a vehicle’s fuel economy by up to 15%, and its power by up to 40%. Remapping also allows for greater control over the car’s performance, as it enables users to fine-tune the engine for particular conditions or driving styles. As well as providing improved power and performance, remapping can also reduce emissions and enhance safety features such as ABS and traction control systems.
After a car has been remapped, it is important to keep some key points in mind. First of all, a car should not be driven beyond its rated parameters. Over-revving the engine can put excessive strain on components and affect the lifespan of the vehicle. It is also important to ensure that the correct oil grade is used for the engine, as this can have an effect on fuel consumption and power output. Finally, regular checks should be carried out to make sure that all sensors are functioning correctly and any faults are investigated.
The amount of time it takes to get a car remapped will depend on a few factors, including the type and age of the vehicle, the complexity of the remapping process and how many performance upgrades are being made. Generally speaking, most cars can be remapped within a few hours, however some more complex upgrades may take up to a day or two.