BMW 335i - Unlocking the True Potential of the Twin-Turbo N54
Few engines have achieved the cult following of BMW’s N54 twin-turbo straight-six and for good reason. It’s a powerhouse of smooth torque and linear delivery, yet from the factory it’s restrained, tuned for emissions targets and broad reliability margins that leave plenty of performance untapped.
That’s where our expertise comes in.
Precision Calibration for the N54
This BMW 335i came in for a precision ECU calibration, and the transformation was immediate. After a complete software read and detailed analysis of the DME strategy, we refined fuelling, boost control, and torque management, ensuring every adjustment complemented the N54’s inherent balance between response and refinement.
The result is an engine that feels more alive across the entire rev range. Turbo response is faster, mid-range torque arrives earlier and stays longer, and acceleration builds with an urgency that feels completely natural to the car. There’s no abruptness, just smooth, relentless thrust that continues to the redline.
Power and Precision in Harmony
The 335i’s chassis now matches the engine perfectly. The enhanced torque delivery makes everyday driving more effortless, whether overtaking on the motorway, pulling up a hill, or simply enjoying the clean surge of twin-turbo power on an open road.
It’s the perfect example of how calibration, not modification, transforms performance, power delivered with precision and control, exactly as BMW intended.
Engineered with OEM-Level Discipline
At AutoUpgrades, every BMW 335i tune is developed using OEM-grade methodology. We use genuine calibration tools and apply the same engineering discipline used in factory development programs, ensuring all safeguards; including boost control, knock protection, and thermal limits remain fully active.
This approach preserves the reliability and refinement that make the 335i such a brilliant daily driver, while giving it the sharper, more responsive edge it always deserved.
The Result
If you own a 335i, you already know how good it is. With our tuning, it becomes extraordinary; sharper throttle response, smoother torque delivery, and a tangible surge in performance that makes the car feel factory-fresh but far more engaging.
Explore the BMW 335i Tune here and experience how precision calibration turns one of BMW’s most revered engines into a true modern classic.