BMW X5 40d G05 Remapping and Tuning
The BMW X5 40d G05 combines BMW’s 3.0-litre B57 MHEV diesel engine with impressive performance, efficiency and the practicality of a luxury SUV. Depending on the factory version, the X5 40d produces 340 BHP or 352 BHP, with 700 Nm or 720 Nm of torque. ECU remapping can unlock even more power, torque and responsiveness.
At Onyx Performance, we offer professional BMW X5 40d remapping and tuning designed to improve your vehicle’s performance while maintaining smooth and predictable power delivery. Our tuning options include Stage 1 remapping, Stage 2 tuning and supporting performance upgrades.
Whether you want stronger acceleration, improved throttle response or better in-gear performance, we can help you get more from your BMW X5 40d G05.
BMW X5 40d G05 Stage 1 Remap
Our Stage 1 ECU remap is designed to optimise the factory engine management software without requiring additional performance hardware modifications.
The 3.0 B57 MHEV diesel engine responds well to software optimisation, with our Stage 1 tuning package targeting approximately 405 BHP and 790 Nm of torque, depending on vehicle condition and setup.
Stage 1 Remapping Benefits:
- Increased horsepower: Improve engine output from the factory 340/352 BHP to approximately 405 BHP.
- Increased torque: Increase torque from the factory 700/720 Nm to approximately 790 Nm for stronger pulling power.
- Improved throttle response: Enjoy sharper and more immediate acceleration response.
- Stronger acceleration: Experience improved performance throughout the rev range.
- Improved in-gear performance: Benefit from stronger mid-range power when overtaking.
- Smoother power delivery: Enjoy a more responsive and refined driving experience.
Our Stage 1 remap is developed around the original engine hardware, making it a suitable option for drivers looking for additional performance without requiring supporting hardware modifications.
BMW X5 40d G05 Stage 2 Tuning
For owners looking for further performance, Stage 2 tuning can provide additional power when combined with suitable supporting modifications.
With the right hardware and a correctly configured ECU calibration, the BMW X5 40d G05 can achieve outputs of up to approximately 425 BHP and 820 Nm of torque.
Stage 2 supporting modifications may include:
- Performance exhaust components: Support improved exhaust gas flow with suitable hardware.
- Performance intake system: Support improved airflow into the engine.
- Upgraded intercooler: Help manage intake temperatures under increased performance demands.
- Turbocharger system assessment: Check the turbocharger system is suitable for the intended performance setup.
- Custom ECU calibration: Optimise engine management software around the installed hardware.
The exact modifications required depend on the vehicle’s existing specification, condition and performance targets. Diesel emissions equipment must remain compliant with applicable road-use and emissions requirements.
Call for a Stage 2 quote. Final performance figures depend on supporting modifications, vehicle condition and setup.
BMW X5 40d G05 Gearbox Tuning
Gearbox tuning can complement an engine remap by optimising transmission behaviour and shift characteristics where supported.
Our gearbox tuning options may help deliver:
- Improved gearshift response
- Faster gear changes where supported
- Optimised shift behaviour
- Improved transmission response under acceleration
- Better coordination between engine and gearbox performance
The exact gearbox and control unit compatibility must be confirmed against your BMW X5 40d’s specification before any gearbox calibration is carried out.
Before Tuning
Before carrying out a remap on your BMW X5 40d G05, we recommend checking the vehicle’s mechanical condition to ensure it is suitable for increased performance.
Our pre-tuning checks may include:
- Fuel system and injectors: Check fuel delivery and injector condition.
- Engine diagnostics: Check for stored fault codes and existing engine issues.
- Turbocharger and boost system: Inspect turbocharger performance and check for boost leaks.
- Air intake system: Check airflow and intake components.
- Cooling system: Check coolant condition and engine temperature management.
- DPF and emissions system: Check the diesel particulate filter and relevant emissions components.
- Engine condition: Assess the general mechanical condition of the engine.
- Transmission and drivetrain: Check relevant components for signs of existing problems.
- ECU identification: Confirm the ECU specification before tuning.
Carrying out these checks helps identify existing issues that could affect the tuning process or the vehicle’s reliability.
Servicing and Maintenance for BMW X5 40d G05
Regular servicing is important for maintaining the performance and reliability of your BMW X5 40d, particularly when the vehicle is being used with increased engine output.
We can help with maintenance and servicing requirements, including:
- Engine oil and filter: Regular oil and filter changes using suitable specifications.
- Fuel filter: Inspection and replacement when required to support correct fuel delivery.
- Air filters: Inspection and replacement where necessary.
- DPF and emissions system: Checks to help identify potential diesel particulate filter and emissions-related issues.
- Turbocharger system: Inspection of the turbocharger and associated components.
- Cooling system: Checks of coolant condition and cooling performance.
- Engine diagnostics: Identify potential faults and warning lights.
- General vehicle inspection: Assess relevant components before performance work.
Maintaining your BMW correctly helps support reliable performance and allows potential issues to be identified before they become more serious.
BMW X5 40d G05 Exhaust Upgrades
An upgraded exhaust system can complement your BMW X5 40d’s B57 MHEV diesel engine while changing exhaust flow and the vehicle’s overall sound.
Available exhaust upgrade options may include:
- Performance exhaust systems: Enhance the vehicle’s exhaust note.
- Sports exhaust components: Give the X5 40d a more distinctive sound.
- Exhaust system upgrades: Choose suitable components for your performance and sound preferences.
- Supporting exhaust components: Explore appropriate hardware for a Stage 2 performance setup.
We can discuss suitable exhaust options based on your vehicle’s specification and intended use. All exhaust modifications must meet applicable road-use, emissions and noise requirements.
BMW X5 40d G05 Performance Upgrades
Alongside ECU remapping, we can help you explore supporting performance upgrades for your BMW X5 40d.
Available options may include:
- Performance air intake systems: Support improved engine airflow.
- Upgraded intercoolers: Help manage intake temperatures.
- Performance exhaust systems: Improve exhaust flow and sound.
- Turbocharger upgrades: Support higher performance targets where suitable.
- Brake upgrades: Improve braking capability to complement increased performance.
- Suspension upgrades: Enhance handling and driving characteristics.
Combining suitable performance hardware with professional ECU tuning can help your BMW X5 40d achieve a stronger and more complete performance setup.
BMW X5 40d G05 Styling and Body Upgrades
Give your BMW X5 40d a more individual appearance with styling enhancements designed to complement its bold and luxurious SUV design.
Styling options may include:
- Front splitters: Add a more aggressive look to the front end.
- Rear spoilers: Enhance the rear styling.
- Side skirts: Create a more distinctive side profile.
- Diffusers: Give the rear of the vehicle a sportier appearance.
- Exterior styling upgrades: Personalise the overall appearance of your X5 40d.
We can help you explore suitable styling options to match your preferred look.
BMW X5 40d G05 Vehicle Security
Protect your BMW X5 40d with additional vehicle security solutions from Onyx Performance.
We offer security options designed to help protect your vehicle, including:
- Ghost immobilisers: An additional layer of immobilisation security.
- Advanced immobilisers: Help prevent unauthorised vehicle use.
- Vehicle tracking systems: Support vehicle location and recovery.
- Security upgrades: Solutions selected around your vehicle and requirements.
Our team can discuss suitable security options for your BMW X5 40d and help you choose a setup that meets your needs.
Why Choose Onyx Performance?
At Onyx Performance, we provide professional vehicle tuning and upgrade services designed around your vehicle and performance requirements.
Our services include:
- Stage 1 ECU remapping: Software optimisation for improved power and torque.
- Stage 2 tuning: Performance tuning with suitable supporting modifications.
- Gearbox tuning: Transmission calibration where supported.
- Diagnostics: Vehicle checks and fault identification.
- Servicing and maintenance: Support to help maintain your vehicle.
- Performance exhausts: Exhaust upgrades to complement your setup.
- Performance parts: Supporting hardware and performance enhancements.
- Styling upgrades: Exterior modifications to personalise your vehicle.
- Vehicle security: Immobilisers, tracking and additional security solutions.
Whether you are looking for a Stage 1 remap, a complete Stage 2 setup or additional performance and styling upgrades, Onyx Performance can help you get more from your BMW X5 40d.
BMW X5 40d G05 Remapping in Slough
Onyx Performance provides BMW remapping and tuning services in Slough, Berkshire, helping drivers improve their vehicle’s performance with professional ECU calibration and supporting upgrades.
Our BMW X5 40d G05 Stage 1 remap is designed to increase power from the standard 340/352 BHP to approximately 405 BHP, with torque increasing from 700/720 Nm to approximately 790 Nm.
We can also discuss Stage 2 tuning, gearbox calibration, exhaust upgrades, intake systems, intercoolers, performance parts and vehicle security.
Contact Onyx Performance to discuss your BMW X5 40d G05 remapping and performance upgrades.
Frequently Asked Questions
How much power can a BMW X5 40d G05 gain from a Stage 1 remap?
The BMW X5 40d G05 comes with factory power versions of 340 BHP or 352 BHP, producing 700 Nm or 720 Nm of torque. Our Stage 1 remap targets approximately 405 BHP and 790 Nm, depending on vehicle condition and setup.
Can my BMW X5 40d G05 have Stage 2 tuning?
Yes. Stage 2 tuning is available with suitable supporting hardware and can achieve outputs of up to approximately 425 BHP and 820 Nm, depending on the modifications and vehicle setup.
Does a Stage 1 remap require additional modifications?
No. Stage 1 tuning is designed around the original engine hardware and does not normally require additional performance modifications.
Can the gearbox also be tuned?
Gearbox tuning may be available where the fitted transmission and control unit are supported. Compatibility must be confirmed against your vehicle’s exact specification.
Will my vehicle be checked before remapping?
Yes. We recommend diagnostic and mechanical checks before tuning to identify existing faults and assess the vehicle’s condition, including the turbocharger system and diesel emissions components.
Can I upgrade the exhaust system?
Yes. We can discuss suitable performance exhaust systems and supporting components for your BMW X5 40d, subject to road-use, emissions and noise requirements.
Can Onyx Performance supply performance and styling upgrades?
Yes. We can help with suitable intakes, intercoolers, exhausts, brakes, suspension components, exterior styling and vehicle security solutions.
What is Stage 3 tuning?
Stage 3 tuning generally involves more extensive hardware modifications, such as upgraded turbochargers and supporting components, alongside a suitable custom ECU calibration. The exact requirements depend on the vehicle and performance target.
Will my ECU or TCU need unlocking?
Your BMW X5 40d G05 is listed with a Bosch MD1CP002 ECU. The exact ECU software and access requirements must be checked against the vehicle before tuning. Any gearbox control unit requirements will also need to be confirmed separately.
Book Your BMW X5 40d Remap
Ready to upgrade your BMW X5 40d?
Book your BMW X5 40d G05 Stage 1 remap with Onyx Performance in Slough, or contact us to discuss Stage 2 tuning and supporting upgrades.
We can also help with gearbox tuning, servicing, diagnostics, exhausts, intakes, intercoolers, performance parts, styling, brakes, suspension and vehicle security.
Call: 01753 439321
Monday-Friday: 10AM-6PM
Saturday: 10AM-3PM
Onyx Performance – BMW X5 40d G05 Remapping and Performance Tuning in Slough, Berkshire.
Contact Onyx Performance
Transform your BMW X5 40d 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!



