BMW 340i F30/F31 Remapping and Tuning
Upgrade your BMW 340i F30/F31 326HP with professional Stage 1 and Stage 2 ECU tuning from Onyx Performance in Slough, Berkshire. Our remapping solutions are designed to unlock the potential of the 3.0-litre B58 turbocharged petrol engine, delivering increased power, stronger torque and sharper throttle response while maintaining everyday drivability.
Whether you drive your 340i Saloon or Touring for daily commuting or spirited weekend driving, our tailored ECU calibration can provide a more responsive and engaging driving experience, with improved acceleration and performance across the rev range.
BMW 340i F30/F31 Performance Figures
| Specification | Power | Torque |
|---|---|---|
| Standard Performance | 326HP | 450Nm |
| Stage 1 Remap | 420HP | 600Nm |
| Stage 2 Remap | 460HP | 650Nm |
Stage 1 Remap: £399.00
Original Price: £478.80
Stage 2 Remap: Call for a quote
Performance figures are indicative and may vary depending on vehicle condition, fuel quality, hardware modifications and individual engine specifications. Stage 2 tuning may require supporting hardware upgrades.
Gearbox Tuning
Enhance your BMW 340i with gearbox tuning designed to complement your engine remap. Depending on the transmission and control unit fitted, calibration can improve shift behaviour, responsiveness and torque management for 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 our team to discuss gearbox compatibility and the most suitable calibration for your vehicle.
BEFORE TUNING
Before remapping your BMW 340i, we recommend a comprehensive vehicle health check. The B58 engine, turbocharger, ignition system, cooling system, fuel system and drivetrain should be in good condition before increasing performance.
Any existing fault codes or mechanical issues should be investigated before tuning begins.
SERVICING AND MAINTENANCE
Regular maintenance is essential for preserving the reliability and performance of your BMW 340i. We recommend following the appropriate servicing schedule and using quality engine oil, filters, spark plugs and other components suitable for the B58 turbocharged petrol engine.
Vehicles operating at increased power levels may benefit from more frequent servicing, depending on driving style and usage.
EXHAUST UPGRADES
An exhaust upgrade can complement your BMW 340i remap by enhancing exhaust flow and improving the exhaust note. Available options may include performance exhaust systems, compatible downpipes and other exhaust components suited to your performance goals.
All modifications should comply with applicable road-use, emissions and noise regulations.
PERFORMANCE UPGRADES
Get more from your BMW 340i with carefully selected performance upgrades. Depending on your goals and current setup, options may include:
- Performance intake systems
- Upgraded intercoolers and charge-air components
- Turbocharger upgrades
- Supporting cooling-system enhancements
- Performance braking and suspension upgrades
For Stage 2 tuning, our team can advise on the supporting modifications required for your particular vehicle.
STYLING AND BODY UPGRADES
Personalise your BMW 340i with styling enhancements that complement its sporty design. Options may include front splitters, rear diffusers, spoilers, wheel upgrades and other exterior styling accessories, subject to compatibility with your F30 Saloon or F31 Touring.
VEHICLE SECURITY
Protect your BMW 340i with suitable vehicle security solutions. We can discuss available security enhancements and anti-theft options to help protect your vehicle against theft and unauthorised access.
WHY CHOOSE ONYX PERFORMANCE?
At Onyx Performance, we provide tailored tuning solutions designed around your vehicle and performance goals. Our services focus on:
- Vehicle-specific ECU calibration
- Stage 1 and Stage 2 remapping options
- Advice on supporting performance modifications
- Gearbox tuning enquiries
- Performance, styling and security solutions
- Professional service in Slough, Berkshire
REMAPPING IN SLOUGH
Onyx Performance offers BMW remapping and tuning services in Slough, Berkshire. Whether you’re looking for a Stage 1 calibration for enhanced road performance or a Stage 2 setup with suitable supporting modifications, our team can help you choose the right solution for your BMW 340i F30/F31.
Contact us to discuss your vehicle, tuning requirements and available appointment options.
Frequently Asked Questions
How much power can a Stage 1 remap add to my BMW 340i?
The supplied indicative Stage 1 figures are 420HP and 600Nm, compared with the standard figures of 326HP and 450Nm. Actual results depend on vehicle condition, fuel quality, hardware and calibration.
How much power can a Stage 2 remap produce?
The supplied indicative Stage 2 figures are 460HP and 650Nm. Stage 2 tuning may require supporting hardware modifications. Contact us for a quote and advice on your vehicle’s setup.
Does my BMW 340i need hardware upgrades?
Stage 1 tuning may be possible on a standard, healthy vehicle, subject to its condition and ECU compatibility. Stage 2 tuning can require supporting hardware, depending on the calibration and installed components.
Can you remap the gearbox?
Gearbox tuning may be available depending on the transmission and control unit fitted. Contact us to confirm compatibility and discuss the available options.
Do you offer dyno sessions?
Yes. A dyno session is available for £120.00. Contact us to discuss testing and availability.
Is Stage 3 tuning available?
Stage 3 tuning depends on the turbocharger, fuel system, supporting hardware and overall vehicle setup. Contact us to discuss your performance goals and the modifications required.
Does my BMW 340i require an ECU unlock?
ECU access requirements depend on the ECU hardware, software version and vehicle production details. The listed ECU is Bosch MG1CS003, but compatibility and any unlock requirements should be confirmed against your vehicle before booking.
BOOK YOUR REMAP
Ready to unlock the potential of your BMW 340i F30/F31? Contact Onyx Performance to discuss Stage 1 remapping, Stage 2 tuning, gearbox calibration and supporting performance upgrades.
Stage 1 Remap: £399.00
Stage 2 Remap: Call for a quote
Location: Slough, Berkshire
Contact Onyx Performance
Transform your BMW 340i F30/F31 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!
