BMW 850i | 2019-2025 | Stage 1The BMW 850i combines coupe elegance with twin turbo brute forcebut its leaving performance on the table. WestTuneds Stage 1 ECU calibration turns the latest gen N63TU4 into a torque monsterdelivering instant response, relentless acceleration, and sharper throttle feel without sacrificing daily comfort or OEM reliability. What Youll Feel: Massive low end torque and immediate throttle input Sharper boost control and extended high RPM pull Smoothed out

stronger torque

which means you can expect improved performance and handling on the road

requiring minimal modifications

it’s engineered to respond like no other

sculpted fins that give your M2 a bold

Transform the look and performance of your BMW G87 M2 (2023+) with the Carbon Fiber AP Vented Hood—a perfect fusion of aggressive styling and functional aerodynamics

and with WestTuned’s Stage 1 ECU calibration

stronger torque across the full rev range

Runs safe on stock intake

Throttle Position

WestTuned’s Stage 1 ECU calibration unlocks the performance this inline-6 was built for—delivering sharper throttle

Flash at WestTuned HQ or authorized partners