BMW X1 M35i xDrive U11 Remapping and Tuning
Upgrade your BMW X1 M35i xDrive U11 300HP with professional Stage 1 and Stage 2 ECU tuning from Onyx Performance in Slough, Berkshire.
The BMW X1 M35i xDrive combines a 2.0-litre B48 turbocharged petrol engine with intelligent all-wheel drive, delivering sporty performance and everyday practicality. Our tailored ECU tuning options are designed to increase power and torque, sharpen throttle response and enhance driving enjoyment while maintaining a focus on drivability and reliability.
BMW X1 M35i xDrive U11 Performance Figures
Standard Performance
- Power: 300HP
- Torque: 400Nm
Stage 1 Remap
- Power: 350HP
- Torque: 500Nm
Stage 2 Remap
- Power: 375HP
- Torque: 530Nm
- Price: Call for a Stage 2 quote
Performance figures are indicative and may vary depending on vehicle condition, fuel quality, software version, modifications and individual vehicle specifications. Stage 2 tuning may require supporting hardware upgrades.
Gearbox Tuning
Enhance the transmission performance of your BMW X1 M35i xDrive with gearbox tuning options designed to complement your engine remap. Depending on vehicle compatibility, gearbox software calibration can improve shift response, optimise torque management and provide a more engaging driving experience.
- Stage 1 Gearbox Remap: Contact for Price
- Stage 2 Gearbox Remap: Contact for Price
- Stage 3 Gearbox Remap: Contact for Price
Contact Onyx Performance to confirm gearbox tuning compatibility for your vehicle.
BEFORE TUNING
Before tuning your BMW X1 M35i xDrive, we recommend a full vehicle health check to ensure the engine, turbocharger, transmission and associated components are operating correctly. Any existing faults should be diagnosed and resolved before remapping.
We also recommend confirming the vehicle’s ECU software version and hardware compatibility before proceeding. ECU access and tuning requirements can vary by production date and software version.
SERVICING AND MAINTENANCE
Regular servicing is essential for maintaining the performance and reliability of your BMW X1 M35i xDrive. We recommend following BMW’s servicing schedule and ensuring that engine oil, filters, spark plugs, cooling systems and other relevant components are maintained correctly.
After tuning, regular maintenance and suitable fuel quality are particularly important for supporting consistent performance and long-term reliability.
EXHAUST UPGRADES
Enhance the sound and character of your BMW X1 M35i xDrive with suitable performance exhaust upgrades. Depending on the chosen system and vehicle specification, exhaust modifications can improve the exhaust note and may support the requirements of a suitable Stage 2 package.
All upgrades should comply with applicable road-use, emissions and noise regulations.
PERFORMANCE UPGRADES
Get more from your BMW X1 M35i xDrive with performance upgrades selected to complement your driving goals. Depending on the tuning package, potential supporting modifications may include intake improvements, intercooler upgrades and other compatible performance components.
Our team can help you assess suitable modifications based on your vehicle’s specification, intended use and performance targets.
STYLING AND BODY UPGRADES
Personalise your BMW X1 M35i xDrive with styling and body upgrades that complement its sporty design. From exterior styling enhancements to carefully selected visual modifications, we can help you explore options that suit your preferences and vehicle specification.
VEHICLE SECURITY
Protect your BMW X1 M35i xDrive with suitable vehicle security solutions. Ask our team about available security upgrades and protection options compatible with your vehicle.
WHY CHOOSE ONYX PERFORMANCE?
At Onyx Performance, we provide professional vehicle tuning and performance upgrades tailored to your car. Based in Slough, Berkshire, our team can help you explore ECU remapping, gearbox tuning, performance hardware, exhaust upgrades, styling enhancements and vehicle security solutions.
We focus on vehicle-specific advice, clear performance expectations and confirming compatibility before carrying out modifications.
REMAPPING IN SLOUGH
Onyx Performance offers professional remapping services in Slough, Berkshire, for drivers looking to enhance their vehicle’s performance. Whether you are considering a Stage 1 remap or a more comprehensive Stage 2 package, contact our team to discuss the best approach for your BMW X1 M35i xDrive U11.
Our team can help confirm ECU compatibility, discuss suitable supporting upgrades and explain the available tuning options for your vehicle.
Frequently Asked Questions
How much power can a Stage 1 remap add to the BMW X1 M35i xDrive U11?
The indicative Stage 1 figures are 350HP and 500Nm, compared with the standard figures of 300HP and 400Nm. Actual results may vary depending on the vehicle and software configuration.
How much power can a Stage 2 remap produce?
Indicative Stage 2 figures are 375HP and 530Nm. Stage 2 tuning may require supporting modifications, and availability must be confirmed for your exact vehicle.
Does the BMW X1 M35i xDrive need hardware upgrades for Stage 2 tuning?
Potentially. Requirements depend on the chosen calibration and the vehicle’s existing specification. Our team can advise on suitable supporting hardware after confirming compatibility.
Can the gearbox be remapped?
Gearbox tuning may be available depending on the transmission, control-unit software and vehicle configuration. Contact Onyx Performance for a compatibility check and pricing.
Can I book a dyno session?
Dyno sessions are available for £120.00. Contact us to confirm availability and discuss the most suitable testing option for your BMW X1 M35i xDrive.
Is Stage 3 tuning available?
Stage 3 tuning depends on the availability of suitable hardware, software and a compatible calibration strategy. Contact us to discuss your goals and confirm what is technically feasible for your vehicle.
Does the ECU need to be unlocked before tuning?
ECU access requirements depend on the ECU hardware, software version and production specification. The listed Bosch MG1CS201 ECU identification should be confirmed against your vehicle before tuning work is booked.
BOOK YOUR REMAP
Ready to enhance your BMW X1 M35i xDrive U11? Contact Onyx Performance to discuss Stage 1 tuning, Stage 2 options, gearbox calibration and supporting performance upgrades. We will help confirm vehicle compatibility, available tuning options and pricing before work begins.
Contact Onyx Performance
Transform your BMW X1 M35i xDrive U11 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!
