BMW Z4 G29 Active Sound Exhaust Tuning Review

Enhance Your BMW Z4 G29 Driving Experience with Active Sound

For owners of the BMW Z4 G29 20i, are you seeking a way to amplify the joy of your drives, especially with the top down? If the stock exhaust note feels a bit underwhelming, particularly during open-air cruising, Active Sound tuning offers a compelling solution. This review delves into the installation of the Just Active Sound G1 system on a BMW Z4 G29 20i at the Today's Car Siheung branch, highlighting why this modification is gaining popularity among Z4 owners.

Why Choose Active Sound for Your BMW Z4 G29?

While the BMW Z4 G29 20i boasts impressive performance and the allure of open-top driving, its standard exhaust note, often attributed to its 4-cylinder engine, can lack the sporty character many enthusiasts desire. Active Sound emerges as a popular alternative to traditional exhaust modifications. Unlike physical exhaust changes, Active Sound systems utilize external speakers to generate a virtual exhaust sound. A significant advantage is that it does not require structural modifications to the vehicle. Furthermore, a dedicated mobile app allows users to select from over 8 distinct exhaust sound profiles and adjust the volume, offering a customizable auditory experience. The inclusion of an on/off function for 'pop' sounds adds another layer of dynamic engagement to your driving.

Key Considerations for Active Sound Installation on the Z4 G29

The compact design of the BMW Z4 G29 presents specific challenges for Active Sound installations. The space available for the sound generator (speaker) beneath the vehicle is limited. Consequently, unlike many other cars, precise heat shield modification is a crucial step. This involves carefully cutting and shaping the heat shield to accommodate the generator securely, ensuring it is protected from exhaust heat and does not interfere with other underbody components. The generator itself, being exposed to the elements, also requires protection against corrosion, typically through a thorough application of black paint. Precision in positioning and minimal, effective modification of the heat shield are paramount for a successful and durable installation.

Installation Process: Just Active Sound G1 on BMW Z4 G29

The installation of the JSR Just Active Sound G1 system (featuring one low-frequency speaker) on this BMW Z4 G29 20i involved the following key steps:

1. Precise Heat Shield Modification: The initial and most critical step involves accurately identifying the optimal location for the sound generator and meticulously cutting the heat shield to ensure a perfect fit without interference.
2. Custom Bracket Fabrication and Generator Mounting: A custom bracket is fabricated and mounted below the modified heat shield, positioned to avoid any issues with the original underbody covers. This bracket uses a two-point fixing system for robust generator support.
3. Secure Generator Installation: The sound generator is securely attached to the custom bracket. The design allows for a bolt-on installation, ensuring it can be cleanly removed later if necessary without leaving significant traces.
4. Wiring and System Integration: The system's wiring harness is carefully routed and connected to the vehicle's CAN bus system to synchronize sound output with engine RPM and load, ensuring realistic sound reproduction.
5. Sound Profile Configuration: Using the dedicated mobile application, the sound generator is configured, selecting preferred sound profiles and adjusting volume and 'pop' sound settings according to the owner's preferences.

The result is a significantly enhanced exhaust note that complements the Z4's sporty character, offering a customizable and engaging auditory experience without compromising the vehicle's original structure.