Ford Focus ST Mk4 Remapping and Tuning
Upgrade your Ford Focus ST Mk4 280HP with professional Stage 1 and Stage 2 ECU tuning from Onyx Performance in Slough, Berkshire. Our remapping service is designed for the 2.3 EcoBoost petrol engine, increasing power and torque while improving throttle response, acceleration and overall drivability.
The Mk4 Focus ST combines a turbocharged 2.3-litre EcoBoost engine with sharp handling and everyday practicality. A professional ECU remap can unlock more of its performance potential, delivering stronger mid-range pull and improved acceleration while retaining the car’s usability on the road.
Ford Focus ST Mk4 Performance Figures
| Performance | Power (HP) | Torque (Nm) |
|---|---|---|
| Standard Performance | 280 | 420 |
| Stage 1 Remap | 340 | 500 |
| Stage 2 Remap | 370 | 540 |
Stage 1 Remap Price: £499.00
Original Price: £598.80
Stage 2 Remap: Call for a Stage 2 quote
All performance figures are indicative and can vary depending on vehicle condition, fuel quality, modifications and individual vehicle specifications.
Gearbox Tuning
A gearbox remap can complement your engine tune by refining gear changes and optimising transmission behaviour. Depending on your vehicle’s gearbox and requirements, we can discuss the following options:
- Stage 1 Gearbox Remap: Contact for Price
- Stage 2 Gearbox Remap: Contact for Price
- Stage 3 Gearbox Remap: Contact for Price
BEFORE TUNING
Before tuning, we recommend ensuring your Focus ST is in good mechanical condition. The engine, turbocharger, cooling system, ignition components and fuel system should be checked, with any existing faults resolved before calibration.
SERVICING AND MAINTENANCE
Regular servicing is essential for maintaining performance and reliability. We recommend using quality engine oil and filters, following appropriate service intervals and keeping up with spark plug and air filter maintenance. A well-maintained engine is better prepared to benefit from increased performance.
EXHAUST UPGRADES
An upgraded exhaust system can complement your Focus ST remap. Options may include performance downpipes, sports catalysts and cat-back exhaust systems. Any exhaust modifications should comply with applicable road-use and emissions regulations.
PERFORMANCE UPGRADES
Further upgrades can help support your performance goals. Depending on the required power level, options may include improved intercooling, intake components, upgraded charge pipes and other supporting hardware. We can advise on suitable modifications for your vehicle and intended use.
STYLING AND BODY UPGRADES
Personalise your Focus ST with styling enhancements to complement its sporty character. Options can include exterior styling components, wheels, suspension upgrades and other carefully selected enhancements.
VEHICLE SECURITY
Protect your vehicle with suitable security solutions. We can discuss available vehicle security enhancements to help provide additional peace of mind.
WHY CHOOSE ONYX PERFORMANCE?
At Onyx Performance, we focus on delivering carefully developed vehicle tuning and performance upgrades. Our team can help you choose the right tuning package for your Focus ST, whether your priority is improved everyday response or a more substantial performance increase.
REMAPPING IN SLOUGH
Onyx Performance provides vehicle remapping and tuning in Slough, Berkshire. Contact our team to discuss your Ford Focus ST Mk4, available tuning options and booking arrangements.
Frequently Asked Questions
How much power can a Stage 1 remap add to my Ford Focus ST Mk4?
The standard 2.3 EcoBoost engine produces 280HP and 420Nm. Our indicative Stage 1 figures are 340HP and 500Nm, offering a noticeable increase in power and torque.
How much power can a Stage 2 remap produce?
Our indicative Stage 2 figures are 370HP and 540Nm. Stage 2 tuning may require suitable supporting hardware, and the exact requirements depend on the vehicle’s specification. Call for a Stage 2 quote.
Do I need hardware upgrades for Stage 1 or Stage 2?
A Stage 1 remap is generally designed around a standard, healthy vehicle. Stage 2 tuning may require supporting modifications to help the engine achieve the intended performance safely. We can advise on the requirements for your setup.
Can I have a gearbox remap with my engine remap?
Yes, gearbox tuning may be available depending on your vehicle’s transmission. Contact us to discuss compatibility and the available gearbox remapping options.
Can I have a dyno session?
Yes. A dyno session is available for £120.00. It can help assess your vehicle’s performance and provide useful information about its power output.
Do you offer Stage 3 tuning?
Stage 3 tuning may be possible with more extensive hardware upgrades and a suitable bespoke calibration. Contact Onyx Performance to discuss your performance goals and the modifications required.
Does my Ford Focus ST Mk4 need an ECU unlock?
The Ford Focus ST Mk4 uses a Bosch MG1CS017 ECU. ECU access requirements can depend on the ECU hardware and software version fitted to your vehicle. Contact us with your vehicle details so we can confirm the available tuning method before booking.
BOOK YOUR REMAP
Contact Onyx Performance to discuss your Ford Focus ST Mk4 remap, confirm compatibility and arrange your booking.
Contact Onyx Performance
Transform your Ford Focus ST Mk4 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!
