ESS Tuning has built an unshakeable reputation for delivering uncompromised performance in the BMW community. Since 2008, ESS has sold over 2000 S65 supercharger systems, making their E9X M3 S65 supercharger kit the most popular BMW supercharger system in the world.
The intercooled S65 G1 Supercharger System delivers a substantial 150-180 whp gain from stock, with the exact figure depending on your fuel choice and exhaust system. To make tuning accessible to all drivers, the kit comes standard with both 91 AKI/95 RON and 93 AKI/98 RON pulleys, so you can optimize performance for your fuel availability and driving goals.
The ESS G1 system improves significantly upon the OEM intake manifold by introducing a custom cast aluminum manifold with optimized runners. These flow seamlessly into CNC'd aircraft-grade 6061 aluminum velocity stacks that smooth airflow and eliminate disruptive turbulence before it reaches the throttle bodies.
At the heart of the system sits the market's largest liquid intercooler, engineered to keep intake charge temperatures in check during extended track sessions, autobahn runs, or spirited street driving. This thermal management is critical for maintaining consistent power delivery and reliability under demanding conditions.
The manifold design prioritizes not just optimal airflow, but also visual appeal and weight efficiency. Every component has been carefully considered to preserve the iconic handling balance that makes the E9X M3 such a special machine. You get serious performance without sacrificing the driving experience that makes these cars legendary.
The ESS G1 supercharger head unit represents a breakthrough in engineering efficiency. At just 9.5 lbs, it's the lightest high-capacity supercharger available in the industry, delivering unparalleled efficiency, exceptional build quality, and remarkably low noise levels. This weight savings contributes directly to preserving the M3's legendary handling characteristics.
What truly distinguishes the ESS S65 kit from all competitors is proprietary software tuning. With over 22 years of dedicated BMW expertise, the difference becomes immediately apparent the moment you drive an ESS-tuned car. Every aspect of the engine's behavior has been refined to work in perfect harmony with the supercharger system.
The kit includes the ESS E-Flash OBD2 cable and a specific ESS MSS60 engine software—a product of over a decade of continuous revisions and real-world testing. This isn't rushed software; it's been perfected through years of development and refinement.
The E-Flash system puts power in your hands. You can upload the supercharger ECU software directly from any PC running Windows 7 or newer, giving you complete control over your vehicle's tuning. The system includes full diagnostic capabilities and code-clearing functionality, so you can monitor your car's health at any time.
Future ESS software updates are delivered via email and can be loaded directly to your car with ease. Your original stock ECU software is always saved and can be restored whenever you choose, giving you complete flexibility and peace of mind.
