2006-2011 Mercedes S500/S550 Performance ECU Tune | W221

2006-2011 Mercedes S500/S550 Performance ECU Tune | W221

Product Highlights:

• Engineered with a performance-first mindset, redefining drivability and power delivery.
• Throttle input becomes immediate, torque delivery is stronger and more consistent, and the powerband feels sharper and more responsive.
• Every part of the rev range is optimized for maximum performance, efficiency, and responsiveness.
• 100% Reversible, always able to go back to stock settings at any time.
• Stage 1 (Factory Downpipes) & Stage 2 (EPC Performance Downpipes) Tuning available.

Compatible With:

Fits 2006-2011 W221 Mercedes S500 S550 RWD 4MATIC 5.5L V8 Naturally Aspirated M273 Engine.

Cold start behavior fully configurable (On/Off).

Downpipe readiness with check engine light suppression (for off-road use only).

Enhanced exhaust acoustics with extended or adjustable burble. Factory speed governor removal for unrestricted performance. Octane-specific calibration tailored to your fuel quality.

100 HP Increase and 100 TQ Increase in tuning gains.

5-8 Days total turn around time. Once purchased, we will email you over instructions. The car is able to be tuned via a cable, which we will provide to you.