The BMW E85 Z4M is a legendary performance machine, but for years, owners have faced an impossible choice: enjoy the aggressive, race-inspired sound of the CSL Airbox or maintain smooth, everyday driveability. Until now, there was no middle ground.
As they did with the E46 M3, Eventuri introduces the Z4 M Hybrid Airbox System—a world-first intake solution that delivers the best of both worlds.
The CSL Airbox is legendary for its raw, motorsport-inspired induction noise. It's the sound that makes Z4M enthusiasts' hearts race. However, achieving that sound traditionally required running the engine without the MAF sensor, which created a cascade of problems. Most owners were forced into expensive ECU conversions or remaps just to make it work—and even then, throttle response suffered, driveability became unpredictable, and smooth power delivery became a distant memory.
For those who wanted the sound without the headaches, traditional intake systems offered reliability and smooth performance, but they lacked the aggressive character that makes the Z4M special.
The Hybrid Airbox System eliminates this compromise entirely. By combining the aggressive, race-inspired acoustics of the CSL Airbox with the seamless driveability and plug-and-play simplicity of a traditional intake, Eventuri has created something truly revolutionary.
