BMW F10 550i | Stage 1The BMW F10 550i hides serious power beneath executive looksbut the stock ECU keeps the N63 V8 on a leash. WestTuneds Stage 1 ECU calibration unleashes the torque rich potential of the twin turbo 4. 4L engine, delivering brutal low end pull and smooth, effortless accelerationall without compromising daily driveability. What Youll Feel: Big torque gains from just 2000 RPM Sharper throttle and improved turbo response Smooth, linear power delivery ideal

and refined power delivery—turning it into a smooth

this calibration brings the 650S into its full potential—without compromising the engineering that made it great

Safe for all OEM emissions systems

All OEM-Safe

✅ What to Expect:

Whether you’re seeking maximum downforce for the track or reduced drag for high-speed runs

Sharper throttle and instant boost response

the Carbon Fiber Rear Bumper Trim comes with all necessary hardware and detailed instructions

enhancing its visual appeal without compromising its integrity

🛠️ Luxury + Performance

Fits: 2021-2025 Porsche 911 992 GT3  | West Racing Titanium Exhaust System

Monitor and all 3 Map packs