Alpina B4 - ECU Remap Stage 1

About the Alpina B4

The Alpina B4 and Alpina D4 tend to be high-performance compact executive cars manufactured by the German automobile manufacturer, Alpina. Based on the BMW 4 Series, the B4 and D4 tend to be manufactured in coupé and convertible body styles. The first generation B4 and D4 used to be launched in 2014 and the more powerful B4 S used to be launched in 2017.

Why Stage 1 for the S 3.0T 440hp

Our Stage 1 calibration is designed for a completely stock vehicle — no hardware changes required. In practice this delivers a safe and reversible improvement in drivability.

Typical gains on healthy examples are from around 440 HP to 480 HP and from 660 Nm to 700 Nm (indicative; varies by condition).

What we do

• Initial diagnostics and a full backup of the original ECU file
• Calibration of timing/fuelling, torque limiters and boost strategies
• Throttle response and power delivery refinement with a focus on smoothness
• Road testing and post-map parameter checks

Safety and Warranty

We follow a conservative approach, maintaining thermal and mechanical margins to protect longevity.

The process is fully reversible (factory file can be restored) and requires no physical modifications.

Summary

A Stage 1 remap turns the Alpina B4 S 3.0T 440hp into a more responsive daily driver while keeping stock-like manners.

Contact us for a free quote and eligibility check.