S63 AMG Biturbo ECU Tune

The Mercedes S63 AMG Biturbo is the undisputed king of luxury performance, but from the factory, its true supercar potential remains heavily restricted. The MBH Motorsports S63 Biturbo ECU Tune is a comprehensive engine management recalibration designed to unleash the brutal power hidden within the M157 5.5L twin-turbo V8, without sacrificing the absolute refinement you expect from an S-Class.

When paired with MBH Motorsports high-flow downpipes, this advanced software calibration delivers staggering, dyno-proven gains of up to 120+ wheel horsepower and 200+ ft-lbs of wheel torque. The result is a heavy-hitting luxury cruiser that accelerates with the ferocity of an exotic hypercar.

Refined Power & Engineered Reliability

This tune goes far beyond simply increasing boost pressure. We meticulously optimize fuel mapping, ignition timing, and throttle dynamics to eliminate turbo lag and deliver a relentless, smooth surge of power all the way to redline. Despite the massive increase in output, the drivetrain remains exceptionally smooth. Furthermore, all factory safety buffers—including knock monitoring and thermal protections—are fully retained to ensure maximum engine reliability.

Key Features:

• Supercar-Level Gains: Unlocks up to +120 WHP and +200 WTQ over stock when paired with MBH downpipes.

• Instant Throttle Response: Eliminates factory electronic pedal lag for immediate, aggressive acceleration off the line.

• Hardware Synergy: Specifically calibrated to take full advantage of the lowered backpressure and increased exhaust velocity of MBH downpipes.

• Top Speed Limiter Removal: Deactivates factory speed governors for unrestricted top-end performance on the track.

• OEM Safeguards Intact: Retains all factory engine safety parameters, torque management, and thermal limiters for total peace of mind.

Compatibility:

• Engine: Mercedes-AMG M157 5.5L V8 Biturbo

• Chassis: Mercedes-Benz S63 AMG (W222 / W221 Biturbo)

Tune Delivery Options

• Send in your ECU: Remove your ECU and ship it to MBH Motorsports. We load your tune in-house and send it back ready to reinstall.

• Remote flash device (+$199): No need to pull or ship your ECU. We ship you an OBD2 flash device and cable with step-by-step instructions, and you flash the tune to your ECU yourself, right from home. A laptop is required.

Disclaimer: For off-road racing and competition use only. This product is not intended or legal for installation on registered, licensed vehicles operated on public roads or highways.