BMW X3 M40i G01 Remapping and Tuning
Upgrade your BMW X3 M40i G01 360–387HP with professional Stage 1 and Stage 2 ECU tuning from Onyx Performance in Slough, Berkshire. Our performance remapping is designed to unlock more power and torque from the 3.0-litre B58 petrol engine while maintaining smooth drivability and everyday usability.
The BMW X3 M40i combines sporty SUV performance with everyday practicality. With a professionally calibrated ECU remap, you can experience stronger acceleration, improved mid-range torque and more responsive throttle performance, making your X3 even more engaging to drive.
BMW X3 M40i G01 Performance Figures
- Standard Performance: 360–387HP / 500Nm
- Stage 1 Remap: 460HP / 640Nm
- Stage 2 Remap: 500HP / 690Nm
Stage 2 tuning may require supporting hardware modifications. Contact Onyx Performance for a tailored Stage 2 quote and confirmation of the required upgrades for your vehicle.
Performance figures are indicative and may vary depending on vehicle condition, fuel quality, software version, modifications and individual vehicle specifications. Results are not guaranteed.
Gearbox Tuning
Enhance the driving experience of your BMW X3 M40i with professional gearbox tuning. Depending on your transmission and vehicle configuration, gearbox calibration can improve shift response, optimise gear changes and help the transmission accommodate increased engine torque.
- Stage 1 Gearbox Remap: Contact for Price
- Stage 2 Gearbox Remap: Contact for Price
- Stage 3 Gearbox Remap: Contact for Price
Contact our team to confirm compatibility and the most suitable gearbox tuning option for your BMW.
BEFORE TUNING
Before any remapping work, we recommend ensuring your BMW X3 M40i is mechanically sound and free from outstanding engine or drivetrain faults. Our team can discuss the vehicle’s condition and any relevant diagnostic checks before tuning.
SERVICING AND MAINTENANCE
Regular servicing is essential for maintaining performance and reliability, particularly on a turbocharged petrol engine. We recommend keeping engine oil, filters and other service items up to date and addressing any warning lights or mechanical concerns before tuning.
EXHAUST UPGRADES
Explore exhaust upgrades to complement your BMW X3 M40i’s performance and appearance. Available options depend on the vehicle configuration and applicable road-use and emissions regulations. Contact Onyx Performance to discuss suitable options.
PERFORMANCE UPGRADES
Alongside ECU remapping, we can discuss supporting performance modifications for your BMW X3 M40i, subject to compatibility and the vehicle’s intended use. Any hardware changes should be selected to work safely with the engine and transmission setup.
STYLING AND BODY UPGRADES
Enhance the look of your BMW X3 M40i with styling and body upgrades selected to complement the G01’s sporty SUV design. Contact our team to discuss available options and fitment.
VEHICLE SECURITY
Protect your vehicle with suitable vehicle security solutions from Onyx Performance. Contact us to discuss available options for your BMW X3 M40i.
WHY CHOOSE ONYX PERFORMANCE?
At Onyx Performance, we provide tailored ECU remapping and automotive upgrade solutions with a focus on performance, drivability and customer service.
- Professional Stage 1 and Stage 2 tuning options
- Vehicle-specific tuning recommendations
- Gearbox remapping enquiries and support
- Performance, exhaust, styling and security solutions
- Based in Slough, Berkshire
REMAPPING IN SLOUGH
Onyx Performance offers BMW X3 M40i remapping in Slough, Berkshire. Contact our team to discuss your G01, your performance goals and the most appropriate tuning option for your vehicle.
Frequently Asked Questions
How much power can a Stage 1 remap add to my BMW X3 M40i?
The indicative Stage 1 figures are 460HP and 640Nm, compared with standard power of 360–387HP and torque of 500Nm. Actual results depend on your vehicle’s engine version, condition and specification.
How much power can a Stage 2 remap produce?
The indicative Stage 2 figures are 500HP and 690Nm. Stage 2 may require supporting hardware, so please contact us for a quote and vehicle-specific requirements.
Do I need hardware upgrades for Stage 2?
Stage 2 requirements depend on the engine version, intended calibration and supporting modifications already fitted. Our team can advise which upgrades may be appropriate before proceeding.
Can you remap the gearbox as well?
Gearbox tuning may be available depending on your transmission and software configuration. Contact us to confirm compatibility and pricing.
Do you offer dyno sessions?
Yes. Dyno sessions are available for £120.00. Please contact us to discuss availability and suitability for your vehicle.
Is Stage 3 tuning available?
Stage 3 options depend on the engine setup, supporting hardware and the vehicle’s intended use. Contact Onyx Performance to discuss a bespoke build and obtain a quote.
Does my BMW need an ECU unlock?
ECU access requirements vary according to ECU hardware, software version and vehicle production details. The listed ECU family is Bosch MG1CS003, but the exact ECU identification and access requirements should be confirmed for your vehicle before tuning.
BOOK YOUR REMAP
Ready to improve your BMW X3 M40i’s performance? Contact Onyx Performance to discuss Stage 1 remapping, Stage 2 tuning, gearbox calibration and supporting upgrades. Our team can help you choose a suitable solution for your vehicle.
Contact Onyx Performance
Transform your BMW X3 M40i G01 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!
