BMW X5M & X6M (F15/F16) Remapping and Tuning – Competition & Non-Competition Models
Unlock the full potential of your BMW X5M (F15) & X6M (F16) (S63 Engine) with Onyx Performance, based in Slough, Berkshire, just outside West London. Whether you own a standard model or the Competition version, our bespoke ECU and gearbox remapping, servicing, and performance upgrades are designed to enhance power, torque, and overall driving experience while maintaining reliability.
Our tuning packages are custom-tailored for both Competition and non-Competition models, ensuring maximum gains from the S63 twin-turbocharged engine.
BMW X5M & X6M (F15/F16) Stage 1 & Stage 2 – Power Gains
Stage 1 – Power Gains:
- Stock Power (Non-Competition Model): 575HP / 750Nm
- Stock Power (Competition Model): 600HP / 750Nm
- Stage 1 Remap (Both Models): 680HP / 850Nm
- Hardware Required: None
Our Stage 1 remap delivers a substantial power increase with no additional hardware required. Optimised ECU calibration ensures quicker turbo spool, sharper throttle response, and improved overall drivability, all while maintaining factory reliability.
Stage 2 – Power Gains:
- Stock Power (Non-Competition Model): 575HP / 750Nm
- Stock Power (Competition Model): 600HP / 750Nm
- Stage 2 Remap (Both Models): Up to 720HP / 900Nm
- Hardware Required:
- 🔧 Decat Downpipe or High-Flow Sports Catalyst
- 🔧 XHP Stage 2 Gearbox Software
Stage 2 tuning enhances the performance of Stage 1 by improving cooling, airflow, and exhaust efficiency, ensuring greater power gains and sharper throttle response.
Looking for Even More Power?
For enthusiasts seeking ultimate performance, we offer Stage 3 tuning packages featuring hybrid turbo upgrades, methanol injection, high-pressure fuel pumps, and additional supporting modifications for even greater power and torque.
📞 Call us on 01753 439321 to discuss Stage 3 options!
Why Choose Onyx Performance?
At Onyx Performance, we specialise in BMW X5M & X6M (F15/F16) tuning and provide a range of services to ensure your BMW operates at peak performance while maintaining reliability:
- ✔ Rolling Road (Dyno) Testing for precise power measurement
- ✔ Data Logging and Diagnostics to ensure optimal engine performance
- ✔ Before and After Performance Printouts
- ✔ Engine Smoke Tests to check for Boost/Vacuum Leaks
- ✔ Optional Features: Overrun Crackles, Speed Limiter Removal, and Catalyst Fault Code Deletes
Our expert team ensures your BMW X5M or X6M delivers improved power, torque, and response, while maintaining engine safety and drivability.
Exhaust Upgrades for BMW X5M & X6M (F15/F16)
Enhance the sound and performance of your X5M or X6M with a high-performance exhaust system:
- 🔧 Decat Downpipes – Improves turbo efficiency and exhaust flow for maximum power
- 🔧 High-Flow Sports Catalysts – Reduces backpressure while remaining emissions compliant
- 🔧 Cat-Back Exhaust Systems – Enhances exhaust tone and sound quality
- 🔧 Resonator Deletes – Adds a sportier, aggressive exhaust note
Pairing Stage 2 tuning with a decat downpipe or high-flow sports catalyst allows for maximum power gains and an enhanced exhaust note.
Servicing and Maintenance for BMW X5M & X6M (F15/F16)
Keeping your BMW X5M or X6M (S63 Engine) in peak condition is essential for long-term reliability. At Onyx Performance, we offer:
- 🛠️ Routine Servicing: Oil changes, filter replacements, and essential inspections
- 🛠️ Brake Repairs and Upgrades: OEM replacements and performance brake kits
- 🛠️ Suspension Maintenance: Checks and optimisations for handling and ride comfort
- 🛠️ Diagnostics and Fault Repairs: Advanced system scans to prevent potential issues
With our expertise in BMW S63-powered models, you can trust Onyx Performance to maintain and enhance your vehicle with precision and care.
Styling, Performance Upgrades & Vehicle Security
Elevate your BMW X5M or X6M with custom styling, performance upgrades, and vehicle security solutions tailored to your needs:
Styling and Performance Upgrades:
- 🏎️ Aero Kits & Carbon Fibre Components – Aggressive styling and improved aerodynamics
- 🏎️ Lowering Springs & Coilovers – Enhanced handling and stance
- 🏎️ Big Brake Kits – Superior stopping power for track and road use
Vehicle Security Solutions:
Protect your BMW X5M or X6M with state-of-the-art security solutions, ensuring peace of mind:
- 🔒 Autowatch Ghost Immobilisers – Prevents key cloning and unauthorised starts
- 🔒 MetaTrak Trackers – Live GPS tracking with mobile app integration
- 🔒 Scorpion Track Systems – Motion alerts, driver recognition, and enhanced vehicle recovery features
- 🔒 Fleet Trackers – Ideal for monitoring multiple high-value vehicles with location tracking and driver behaviour analytics
Our security systems are professionally installed to provide seamless integration and maximum protection.
10 Frequently Asked Questions About BMW X5M & X6M (F15/F16) Tuning
- How much power can a Stage 1 remap give my BMW X5M or X6M?
Stage 1 tuning increases power to 680HP and 850Nm, with no hardware modifications required. - What upgrades are required for Stage 2 tuning?
Stage 2 tuning requires a decat downpipe or high-flow sports catalyst and XHP Stage 2 gearbox software. - Will remapping my X5M or X6M affect reliability?
No, our tuning is designed to increase performance while maintaining engine reliability, provided the car is well maintained. - How long does it take to remap my X5M or X6M?
Stage 1 tuning can be done on the same day, while Stage 2 may take longer due to hardware installations. - Does remapping my car void the warranty?
Yes, ECU tuning can void the manufacturer’s warranty, but we offer reversible tuning options. - Can I return my car to stock settings if needed?
Yes, we can restore your ECU back to factory settings if required. - Do you offer finance options for tuning?
Yes, we offer flexible finance plans over 4 monthly payments. - Will Stage 2 tuning make my exhaust louder?
Yes, especially when paired with a decat downpipe or high-flow sports catalyst. - What is the difference between Competition and non-Competition models?
Competition models have more aggressive tuning from the factory, but both versions can achieve similar power levels after tuning. - Where is Onyx Performance located?
We are based in Slough, Berkshire, just outside West London.
Contact Onyx Performance
Transform your BMW X5M or X6M (F15/F16) 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!
Tags:
BMW X5M & X6M (F15/F16) tuning in Slough
BMW X5M Stage 1 remap (680HP / 850Nm)
BMW X6M Stage 2 tuning with performance exhaust (720HP / 900Nm)
Downpipe upgrades for BMW X5M & X6M (S63)
Servicing and maintenance for BMW X5M & X6M
Vehicle security for BMW with trackers and immobilisers
Big brake kits for BMW X5M & X6M
Unlock the true potential of your BMW today!
