BMW 420i Exhaust Upgrade Review - Enhanced Sound

BMW 4 Series: Enjoying Sound Without Noise Concerns

A BMW 420i owner, concerned about its subtle exhaust note, opted for the Jun BRLANTE variable exhaust system. It's impressive how a deep, resonant sound can be achieved, even on a mid-size imported coupe. The key advantage lies in the variable exhaust technology, allowing sound adjustment to suit different driving situations, overcoming the limitations of a standard exhaust replacement.

Jun BRLANTE Variable Exhaust vs. Standard Exhaust

Standard exhaust systems offer a fixed sound level, regardless of whether you're driving in the city or on the highway. In contrast, the Jun BRLANTE variable exhaust features an electronic damper that responds to remote control signals. This allows you to maintain a quiet profile and then switch to a powerful, deep sound with a simple button press when desired. Technically, this is achieved by adjusting the valve opening within the exhaust, altering the pressure and flow rate to create distinct acoustic resonance. Technicians experienced with Jun products understand this structure intimately, enabling them to craft optimal exhaust tones for each vehicle model.

Precise Angle Setting Determines Exhaust Sound Quality

A critical aspect of this BMW 420i installation was the precise angle of the muffler and the position of the tips. Even a slight deviation of 1-2 degrees can result in an undesirable tone, either too high-pitched or lacking in low-end depth. The installation team, with their background at Jun, possesses an accurate understanding of the BRLANTE system's design. They meticulously measured the vehicle's width, clearance with the wheel housing, and the left-right balance of the tips, ensuring a perfect fit rather than a simple bolt-on.

BMW 420i Installation Process

This installation involved removing the original exhaust system and fitting the new BRLANTE system from the undercarriage to the tips. The high-quality stainless steel used in BRLANTE components necessitates careful attention to finishing. During the process, the angle of the tips was precisely adjusted to ensure proper alignment with the rear bumper, the vehicle's centerline, and the height of both tips. The team's experience with Jun products was invaluable here.

After installation, the engine was started to verify the acoustics. Both quiet and sport modes were tested to confirm the desired tones. For this BMW 420i, the result was a sufficiently rich low-end frequency, significantly exceeding the typical output for a 4-cylinder engine.

Variable Exhaust Installation Cost and Time

The cost for the Jun BRLANTE variable exhaust varies by vehicle model and configuration. For a mid-size sedan like the BMW 4 Series, prices typically range from 3.5 to 5 million Korean Won. This can fluctuate based on the product grade and any additional options, such as sound tuning or remote control features. The installation typically takes 4 to 6 hours on the same day, including removal, fitting, angle adjustment, and final sound verification.