BMW 850i | 2019-2025 | Stage 1 mercedes-w205-c63s-2015-2023-esr6027345

BMW 850i | 2019-2025 | Stage 1 mercedes-w205-c63s-2015-2023-esr6027345The 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

and confident acceleration—without disturbing its smooth

the Ghibli with WestTuned Stage 1 becomes a refined weapon—equal parts business and pleasure

this intake system has been meticulously developed through extensive real-world testing to optimize turbo efficiency

and boost response

2009–2013)– Carrera / Carrera S (3

Flow Collector: This part directs air from the filters to the turbo inlets

maximizing filter exposure and minimizing turbulence

and sharper top-end pull—transforming the M550i into a brutally fast daily weapon that’s refined when you want it

Fully compatible with factory emissions and driveline components

Whether it’s for daily use

Weight: Lightweight for minimal impact on overall vehicle weight

Stage 1 transforms the 750S into a precision weapon—more boost