Description
Unleash the full performance potential of your BMW with the dAHLer Engine Performance Tuning Module for S55 engines—designed for enthusiasts seeking increased horsepower, torque, and enhanced control, all while maintaining the integrity and reliability of factory systems. Developed in Switzerland and manufactured in Germany, this advanced module integrates flawlessly into the vehicle’s electrical system, allowing for true plug-and-play installation without removing the DME or compromising emissions compliance.
The dAHLer tuning module is engineered for all BMW models equipped with the high-performance S55 3.0L twin-turbocharged inline-six engine. This includes the iconic BMW M3 and M4 models, among others. Power delivery is smooth, responsive, and fully compatible with all factory drive modes. With gains of up to 9 horsepower to the wheels on a stock vehicle, this module delivers real-world performance improvements while preserving everyday drivability.
PLEASE READ THE INSTALLATION GUIDE CAREFULLY. ENSURE THAT POWER IS CONNECTED TO THE CORRECT POWER SOURCE AND CHASSIS GROUND TO AVOID INSTALLATION ERRORS.
Installation is quick—typically under an hour—with the included OEM-style harness connecting to the boost pressure sensors and camshaft position sensor. Control and customization are made easy via the free dAHLer Mobile App for iOS and Android. Through the app, users can wirelessly switch between three performance maps, toggle the tune on or off while driving, and configure engine warm-up timing. Firmware updates can also be applied globally, ensuring your module remains current with future enhancements.
For service appointments or diagnostic scans, the system can be reverted to factory behavior using the included bypass adapter—no need to remove the harness. Additionally, a valet plug allows temporary deactivation of the module while keeping the hardware installed. The module is fully EPA compliant and remains undetectable by standard diagnostic tools, making it a reliable and reversible upgrade.
Inside, a sophisticated control unit adjusts boost pressure based on real-time data such as load and RPM, enhancing ignition and fuel parameters to maximize power without triggering fault codes or interfering with factory safety protocols.
Whether you’re pushing hard on the track or enjoying spirited road driving, the dAHLer Engine Performance Tuning Module delivers elevated performance that blends seamlessly with your BMW’s original character.
Key Features:
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Power gains of up to 9 hp to the wheels on a stock vehicle
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Fully Plug & Play – no DME removal required
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Compatible with all driving modes and factory diagnostics
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Developed in Switzerland and made in Germany
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OEM-style harness connects directly to boost and camshaft sensors
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Mobile App control via Bluetooth 4.0 (iOS & Android)
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Choose from 3 customizable performance maps
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Toggle power on/off via smartphone, even while driving
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Includes warm-up timer for safer tuning operation
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Firmware updates provided free via app
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Fully reversible with included bypass adapter and valet plug
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Undetectable by standard diagnostic tools
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EPA compliant and legal in the state of California
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Compatible with ethanol fuel (E93 or lower)
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Not VIN-locked – transferable and resellable
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Covered by worldwide 3-year product warranty
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Tested on the German Autobahn for performance and reliability
Fitment:
Compatible with BMW models equipped with the S55 3.0L twin-turbocharged inline-six engine, including:
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BMW M3 (F80) – 2015–2018
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BMW M4 Coupe (F82) – 2015–2020
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BMW M4 Convertible (F83) – 2015–2020
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BMW M4 CS (F82) – 2018–2020
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BMW M4 GTS (F82) – 2016
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BMW M2 Competition (F87) – 2019–2021
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BMW M2 CS (F87) – 2020–2021
Supports all factory drivetrain configurations, including manual and DCT transmissions. Compatible with all factory emissions components and software updates.
Upgrade your BMW’s performance with the dAHLer Engine Performance Tuning Module for S55 engines and enjoy responsive power, smooth integration, and advanced tuning control.
