2023 BMW M850i xDrive

completed on: December 17th, 2025

project spotlight

This 2023 BMW M850i xDrive came in for our Stage 2 Performance Package, focused on unlocking power, refining throttle response, and enhancing overall drivability. With proper ECU unlocking, upgraded airflow, and a custom calibration, this M850i now delivers performance that rivals full M models while retaining grand-touring comfort.

Tuning & Calibration:

  • FEMTO ECU Unlock (@femtoevo)
  • Bootmod3 Tuning Platform (@protuningfreaks)
  • Egor’s Garage Custom Stage 2 ECU Calibration (@egorsgarage)

Performance Hardware:

  • RK Tunes Intakes (@rktunes)
  • Evolution Racewerks Downpipes (@evolutionracewerks)

With improved airflow, optimized boost control, and refined calibration, this M850i xDrive transforms into a deceptively fast, all-wheel-drive grand tourer with effortless power delivery.