NO DME UNLOCK REQUIRED – OEM M3/M4 F8X CS POWER UPGRADE

Want to boost the performance of your BMW M3/M4 without the need for a full remap or DME unlock? Our OEM M3/M4 CS OEM Software Upgrade offers a hassle-free solution, delivering genuine power gains using BMW’s factory calibration.

This flash upgrades your F8X's engine software to the same spec as the M3/M4 CS, unlocking:

BMW M3/M4 F8X

• Peak power: 431hp → 460hp

• Maximum torque: 550Nm → 600Nm

BMW M3/M4 F8X Competition

• Peak power: 444hp → 460hp

• Maximum torque: 550Nm → 600Nm

Since this upgrade uses the original BMW M3/M4 CS mapping, there’s no need to unlock your DME, making installation safer, faster, and fully reversible.

Compatible with all M3 F80 M4 F82 F83 inc. Competition.
Enhance your driving experience further with additional CS/GTS software options:

Unlock More Performance with CS/GTS Software Enhancements

Take your F8X to the next level by adding CS/GTS coding for even greater driving precision and engagement. These factory-inspired upgrades further refine the car’s dynamics across multiple systems:

• CS/GTS DCT Transmission Coding
  Reduces jerky, kangaroo-like shifts and sharpens gear change response in Sport and Sport+ modes. On Competition Pack models, this also updates the exhaust burble profile to replicate the distinctive tone of the M4 GTS/CS.

• CS/GTS Electronic Power Steering
  Delivers a firmer, more connected steering feel with optimised power assist for increased control, precision, and feedback during spirited driving.

• CS/GTS Traction Control
  Enhances MDM mode with increased slip tolerance before intervention—ideal for controlled oversteer and a more engaging, rear-biased driving experience.

• CS/GTS Active Rear Differential
  Improves traction off the line, enhances stability during cornering, and ensures smoother, more predictable power delivery in all conditions.

Each of these software upgrades is engineered to enhance your vehicle’s responsiveness, feedback, and overall driving character—bringing it closer to the performance feel of the limited-run M4 CS and GTS models.

⚠️ Please Note: Modifying your vehicle’s software may affect your manufacturer’s warranty. Always check your warranty terms and conditions before proceeding.