Ford Mustang GT S550 Remapping and Tuning
Upgrade your Ford Mustang GT S550 421HP / 450HP with professional Stage 1 and Stage 2 ECU tuning from Onyx Performance in Slough, Berkshire. Our tuning is designed for the naturally aspirated 5.0-litre V8 Coyote petrol engine, delivering increased power and torque, sharper throttle response and improved drivability.
The Ford Mustang GT S550 is powered by Ford’s renowned 5.0 V8 Coyote engine, known for its strong performance and unmistakable V8 character. A professional ECU remap can further enhance the driving experience, giving your Mustang stronger performance and a more responsive feel. Whether you use your car on the road or for spirited driving, we can tailor the tuning to your requirements.
Ford Mustang GT S550 Performance Figures
| Performance | Power (HP) | Torque (Nm) |
|---|---|---|
| Standard Performance – Version 1 | 421 | 530 |
| Standard Performance – Version 2 | 450 | 530 |
| Stage 1 Remap | 480 | 560 |
| Stage 2 Remap | 505 | 580 |
Stage 1 Remap Price: £599.00
Original Price: £718.80
Stage 2 Remap: Call for a Stage 2 quote
All performance figures are indicative and may vary depending on vehicle condition, fuel quality, modifications and testing conditions.
Gearbox Tuning
A gearbox remap can complement your engine tune by refining gear changes, shift response and transmission behaviour. Contact our team to discuss the most suitable gearbox tuning option for your Ford Mustang GT.
- Stage 1 Gearbox Remap: Contact for Price
- Stage 2 Gearbox Remap: Contact for Price
- Stage 3 Gearbox Remap: Contact for Price
BEFORE TUNING
Before carrying out any remapping, we recommend ensuring your Ford Mustang is in good mechanical condition. The engine, ignition system, cooling system and drivetrain should be checked, with any existing faults resolved before tuning.
SERVICING AND MAINTENANCE
Regular servicing is essential for maintaining the performance and reliability of your 5.0 V8 Coyote engine. We recommend using the correct quality engine oil, maintaining fresh filters and spark plugs, and following an appropriate servicing schedule.
EXHAUST UPGRADES
An upgraded exhaust system can enhance exhaust flow and bring out the distinctive sound of the Mustang’s V8 engine. We can discuss suitable exhaust options to complement your ECU remap and wider performance setup.
PERFORMANCE UPGRADES
For drivers looking to build on their ECU remap, additional performance upgrades may include intake improvements, exhaust enhancements and other supporting hardware. The right combination depends on your performance goals and the condition of your vehicle.
STYLING AND BODY UPGRADES
Make your Mustang stand out with styling enhancements and body upgrades. From exterior details to more substantial visual modifications, we can help you explore options to suit your preferred look.
VEHICLE SECURITY
Protect your vehicle with suitable security solutions. Ask our team about available vehicle security upgrades and options for your Ford Mustang GT.
WHY CHOOSE ONYX PERFORMANCE?
At Onyx Performance, we provide professional vehicle tuning and performance upgrades tailored to your vehicle. Our team focuses on carefully considered ECU calibration, clear advice and a service built around your performance goals.
REMAPPING IN SLOUGH
Onyx Performance is based in Slough, Berkshire, offering professional ECU remapping and vehicle performance services. If you are looking for a Ford Mustang GT remap, contact our team to discuss your vehicle and arrange your tuning appointment.
Frequently Asked Questions
How much power can a Stage 1 remap add to my Ford Mustang GT?
The listed Stage 1 tuning figure is up to 480HP and 560Nm, compared with the supplied standard figures of 421HP or 450HP and 530Nm. Actual results can vary depending on the vehicle and its condition.
How much power can a Stage 2 remap produce?
The listed Stage 2 performance figure is up to 505HP and 580Nm. Stage 2 tuning may require supporting hardware, depending on the vehicle and chosen setup. Contact us for a tailored quote.
Do I need hardware upgrades for Stage 1 or Stage 2?
Stage 1 is generally designed around a standard, healthy vehicle. Stage 2 may require supporting modifications to achieve the intended performance. We can advise on the requirements for your Mustang.
Can I have a gearbox remap with my engine remap?
Yes, gearbox tuning may be available alongside your engine remap, subject to your vehicle’s transmission and compatibility. Contact us to discuss the available options.
Can I have a dyno session?
Yes. Dyno sessions are available at £120.00. A dyno session can help assess your vehicle’s performance.
Do you offer Stage 3 tuning?
We can discuss more extensive tuning projects and supporting modifications. Stage 3 requirements depend on the engine, hardware and intended performance target, so please contact us to discuss your plans.
Does my Ford Mustang GT need an ECU unlock?
Your Mustang GT is listed with a Continental EMS24xx ECU. ECU access and any unlock requirements depend on the ECU hardware and software version fitted to the vehicle. We can check compatibility before proceeding with tuning.
BOOK YOUR REMAP
Contact Onyx Performance to discuss your Ford Mustang GT S550 remap. Our team can help you choose the right tuning option and explain the available performance upgrades.
Contact Onyx Performance
Transform your Ford Mustang GT S550 today with Onyx Performance. Whether you’re looking for Stage 1 or Stage 2 remapping, performance exhaust systems, styling enhancements, or vehicle security solutions, our expert team is here to help.
📞 Call us now on 01753 439321 to book your tuning service or discuss Stage 2 and security options!
