Nforcd BMW M4 S55 ECU Remap Software – Custom Tuning, Stage 1 500 bhp / Stage 2 520 bhp+, Dyno Proven, Bench Unlock (UK)

Nforcd BMW M4 S55 ECU Remap Software – Custom Tuning, Stage 1 500 bhp / Stage 2 520 bhp+, Dyno Proven, Bench Unlock (UK)

£550.00
£550.00
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Nforcd Remap Software for BMW M4 S55, Stage 1 500 bhp, Stage 2 520 bhp+

Transform your BMW M4 S55 with Nforcd custom ECU remap software. This is bespoke BMW M4 tuning designed to deliver real, repeatable gains with a focus on safety, drivability and reliability. Developed in partnership with one of Europe’s foremost calibrators, our BMW M4 S55 remap gives you the performance and response your M4 deserves.

Why choose Nforcd for your M4 S55 remap

  • Fully custom calibration built from the ground up for your specific car, not a generic file.
  • Hub dyno proven tuning with before and after printouts so you can see exactly what your BMW M4 remap delivers.
  • Baseline health checks carried out prior to tuning to confirm the car is operating as it should.
  • ECU bench unlock available for newer ECUs that cannot be tuned via OBD, ensuring even late models benefit from our calibration.
  • Road and dyno validation for smooth power delivery, crisp throttle response and confident daily drivability.

Power levels

  • Stage 1: approximately 500 bhp
  • Stage 2: approximately 520 bhp+

We run this calibration ourselves and our customers have been consistently impressed with the results. Expect stronger mid range performance, faster spool, sharper response and a refined, linear power curve that makes the M4 feel alive without compromising safety.

Custom options you can request

  • Cold start delete
  • Adjustable burbles higher or lower to taste
  • GTS style start up roar
  • Other personal preferences can be integrated into your calibration

How our BMW M4 S55 tuning process works

  • Initial inspection and power assessment to confirm baseline performance.
  • Creation of a fully custom ECU map tailored to your M4 and your goals.
  • Multiple hub dyno runs to validate gains and ensure consistency.
  • Final checks and road testing for smoothness, response and reliability.

Professional fitting and booking

For installation, dyno testing and ECU bench unlock, we recommend booking with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com. We are happy to discuss your build, options and timelines.

Built for the BMW M4 S55

Designed specifically for the BMW M4 S55 engine. If you are unsure about compatibility, contact our team and we will advise before booking.

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