AC Engine

AC SCHNITZER ENGINE

PERFORMANCE ENHANCEMENTS BY AC SCHNITZER
AC Schnitzer’s engine modifications represent the pinnacle of German tuning engineering, combining increased power with uncompromising reliability. Each power upgrade is meticulously developed to suit individual BMW models and is fine-tuned through extensive dyno and road testing. Whether for a 4-cylinder, 6-cylinder or high-performance M model. AC Schnitzer reprograms the engine control unit (ECU) to deliver significantly more torque and horsepower—often without requiring hardware changes. These performance kits are designed to maintain factory drivability while elevating responsiveness and acceleration. Importantly, all performance upgrades are TÜV-approved, ensuring compliance with European road safety and emissions standards. Customers can expect precise power gains along with full compatibility with the vehicle’s onboard electronics, safety systems, and standard driving modes.
AC SCHNITZER – ENGINE STYLING & VISUAL ENHANCEMENTS
Beyond pure performance, AC Schnitzer also focuses on enhancing the visual identity of the engine bay. Their engine styling packages feature signature design touches such as custom engine covers, badges, carbon or aluminum elements, tailored to match the vehicle’s performance character. These aesthetic upgrades provide a motorsport-inspired look that reflects the tuning pedigree under the hood. Carefully engineered for durability and heat resistance, the styling components are more than decorative—they embody the same quality standards as AC Schnitzer’s mechanical upgrades. Whether viewed at a show or admired during routine maintenance, an AC Schnitzer-tuned engine bay makes a bold statement about both performance and attention to detail.

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AC SCHNITZER PERFORMANCE UPGRADES BY TYPE

PETROL ENGINE PERFORMANCE UPGRADE
AC Schnitzer’s performance upgrade for petrol engines features an additional control unit that is easily installed without altering the original ECU. This ensures that all factory software updates remain possible while delivering a significant boost in both power and torque. The result is a sharper throttle response, quicker acceleration, and an overall increase in driving agility—without compromising reliability or daily usability.
Developed and tested extensively on test benches, racetracks, and in real-world driving conditions, the system is homologated and registerable for road use. It includes a component warranty that does not require proof of causality, offering peace of mind with every drive. The upgrade is also fully compatible with AC Schnitzer sports exhaust systems, enhancing both performance and sound. Precision-engineered in Germany, this is a seamless and safe way to unlock your BMW’s hidden potential.
DIESEL ENGINE PERFORMANCE UPGRADE
AC Schnitzer’s diesel performance upgrade includes an add-on control unit that is installed without modifying the original factory ECU. This allows for continued compatibility with BMW’s software updates while delivering a substantial and safe increase in both power and torque. Drivers benefit from noticeably improved acceleration and greater responsiveness across the rev range.
Backed by a component warranty without limitation of causality, the system has been rigorously tested on race tracks, test benches, and in everyday driving scenarios to ensure long-term stability and reliability. The upgrade is fully homologated and road-legal, and can be easily installed within a short time. For an even more dynamic experience, it can be paired with an AC Schnitzer exhaust system. Engineered in Germany, it transforms your diesel BMW into a more agile, exciting machine—without compromising safety or comfort.
HYBRID ENGINE PERFORMANCE UPGRADE
AC Schnitzer’s hybrid performance upgrade is designed specifically for the petrol engine component of your BMW’s hybrid powertrain. The retrofit control unit delivers a safe and effective increase in power and torque, without modifying the electric motor. The factory ECU remains untouched, ensuring full compatibility with BMW software updates and vehicle systems.
Tested extensively on racetracks, dynos, and in real-world driving, the upgrade ensures long-term reliability and stability. The result is sharper acceleration, enhanced agility, and a more engaging driving experience—all while retaining full road legality through homologation. Installation is quick and straightforward, and the upgrade includes a component warranty with no requirement to prove causality. For drivers seeking additional excitement, it can also be paired with an AC Schnitzer exhaust system. As always, it’s precision-engineered and made in Germany.

OEM-LEVEL ENGINEERING, MOTORSPORT DNA
AC Schnitzer parts are developed with precision and tested to meet or exceed OEM standards, all while drawing from decades of motorsport heritage.
GERMAN DESIGN & MANUFACTURING EXCELLENCE
Every product is engineered in Germany, ensuring unmatched quality, fitment, and reliability straight from the heart of automotive performance culture.
WARRANTY-FRIENDLY PERFORMANCE UPGRADES
Unlike many aftermarket brands, AC Schnitzer upgrades are TÜV-approved and often retain manufacturer warranties, making them ideal for discerning BMW owners.
SEAMLESS INTEGRATION WITH BMW VEHICLES
Whether it’s chassis tuning, aerodynamics, wheels, or power upgrades — all components are designed specifically for BMW and MINI platforms for perfect integration.