We come to you, check the vehicle over first, then tune it properly — dyno developed, tested and proven, balanced for reliability and real-world performance.
What we do
Cars, vans, 4x4s and light commercials. Every remap dyno developed, tested and proven before it goes near your engine.
We modify the ECU to unlock what the engine already has — injection timing, boost, air-fuel ratios and torque limiters, adjusted together. More power, sharper throttle, and it still drives like a factory car.
Tuned for the way you actually drive — low-down torque where you use it, so you're not chasing revs. Balanced for MPG without leaving the car feeling flat.
Warning lights, limp mode, endless regens. We find the actual cause, sort the filter side properly and get the car running efficiently again.
Carbon build-up is what kills diesels. We adjust the EGR side to stop soot recirculating where it shouldn't and take the strain off inlet manifolds and swirl flaps.
AdBlue faults are a nuisance and an expensive one at the main dealer. We resolve the issues and get the vehicle back to full function without the drama.
Something not on the list — launch control, speed limiters, a track car needing a hand? Ask us.
How it works
Professional ECU tuning, done at your convenience.
Tell us your reg and vehicle details
We check your car and give you the expected gains
Pick a convenient time that suits you
We arrive at your chosen location
A full check over before anything changes
Dyno-developed, proven tuning applied to the ECU
Enjoy the difference on the road
Why GS
Anyone can flash a file and hope. The difference shows up six months later — in the turbo, the clutch, the DPF, or the MPG that never actually improved.
Every remap we fit is dyno developed and proven on the specific engine before it goes anywhere near your car, then checked against yours and its condition. Tuned for the balance point between reliability and performance — not for a number to put in an advert. If your car is not a sensible candidate, we will say so and save you the money.
Proven on the rollers before it ever goes near your car.
Reversible. Your original map is saved and kept on file.
We travel to you. No booking the car in, no waiting room.
Honest advice on warranty, insurance and whether it's worth it.
Call us afterwards. Tweaks and questions are part of the job.
Not happy with how it drives? We put it right.
Customers
Had a stage 1 remap on a bmw 1 series and it was booked and done quickly and professionally, brilliant service
I had my BMW M135i remapped with GS performance and couldn't be happier with the result! Has made me fall in love with the car all over again. The whole process was very easy and Lewis provided great advice and communication.
I got GS Performance to remap my Audi A5 2.0tdi as it was only the 138bhp model.
They were really helpful and explained the whole process from start to finish.
My car pulls a lot better and has also increased my mpg so win win.
Would highly recommend them
Had my mk1 Fabia vrs se in with the guys to map out my egr delete. Customer service was great and they got the job done easily, would 100% recommend!
Very polite and Excellent service ,will be using you guys again in the future 👍
I got in contact with GS performance on instagram via a mutual friends recommendation, very professional worked around my time schedule and availability turned up on time and was thorough and efficient with the work.
I had my 2010 Astra 1.4T Remapped with GS Performance they turned up on time and all work was completed in a timely manner.
The best service, comprehensive. Every step explained by amazing technicians.
Get in touch
Tell us what you drive and what you're after. We'll come back with what's realistic, what it costs and when we can get to you — usually within the hour during the day.