Description
Upgrade your Audi B9 or B9.5 S4 with the Integrated Engineering (iE) Valved Cat-Back Exhaust System, engineered to deliver a more engaging exhaust sound with the flexibility to switch between an aggressive tone and a quieter driving experience. Designed specifically for the Audi S4 platform, this performance exhaust system combines app-controlled exhaust valves, vehicle-specific fitment, and convenient integration to give drivers greater control over their vehicle's sound without the need for a separate handheld remote.
Whether you're enjoying spirited driving or cruising through residential areas, the iE valved exhaust lets you adjust the exhaust character to suit your surroundings and preferences. Open the valves for a more pronounced exhaust note, or close them for a quieter, more restrained driving experience. With convenient control through the iE mobile app, you can manage the exhaust valves using your existing smartphone rather than carrying an additional remote.
Key Features and Benefits
App-Controlled Exhaust Valves
Control your exhaust sound directly through the iE app on your smartphone. The integrated valve-control system eliminates the need for a separate handheld remote, offering a convenient way to adjust the exhaust character whenever you want to change your driving experience.
Adjustable Exhaust Sound
Enjoy the flexibility of a valved exhaust system designed to accommodate different driving situations. Open the exhaust valves for a more aggressive, performance-oriented sound, or close them for a quieter exhaust note during everyday commuting and relaxed cruising.
Manual Valve Control with Compatible iE ECU Tuning
Pair the system with the Pro or Apex tier of the iE B9 3.0T tuning suite to access manual exhaust valve control on demand, as described by the manufacturer. This integration provides greater control over valve operation beyond the standard factory drive-mode logic, subject to the supported vehicle and software configuration.
Vehicle-Specific Fitment
Engineered around the Audi B9 S4's factory mounting points, the iE cat-back exhaust is designed to provide a precise fit and proper sealing when installed correctly. Its vehicle-specific design helps avoid the fitment compromises commonly associated with universal exhaust systems.
Performance-Oriented Exhaust Design
The valved configuration allows drivers to select their preferred exhaust character while retaining the convenience of a system designed for the Audi S4 platform. It is an appealing upgrade for enthusiasts seeking a more distinctive exhaust presence without committing to the same sound level in every driving situation.
Convenience Without an Additional Remote
By using the iE mobile app for exhaust valve control, the system simplifies operation and reduces the need for extra accessories. Drivers can manage the exhaust settings through a familiar interface instead of keeping track of a separate remote control.
Compatible Vehicle Applications
Designed for the following Audi S4 generations:
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Audi S4 B9
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Audi S4 B9.5
Engine Platform: Audi 3.0T
Verify the exact model year, engine configuration, and exhaust fitment before ordering. Confirm the required iE app and compatible ECU tuning level if manual valve control is a priority.
Installation Information
The iE Valved Cat-Back Exhaust System is engineered to use the factory mounting points on the compatible Audi S4 platform. Professional installation is recommended to ensure correct alignment, secure connections, proper sealing, and reliable operation of the exhaust valves.
Before installation, verify all included components, connection points, and any vehicle-specific requirements. If you intend to use manual valve control, confirm that your ECU tune and software configuration support the feature.
Why Choose the iE Valved Cat-Back Exhaust System?
The Integrated Engineering Valved Cat-Back Exhaust System offers Audi B9 and B9.5 S4 owners a convenient way to personalize their exhaust sound. Its smartphone-based valve control, optional manual control integration with compatible iE tuning, and vehicle-specific mounting design make it a practical upgrade for drivers who want both an engaging exhaust note and everyday flexibility.
Whether you're looking for a more aggressive sound during spirited driving or a quieter experience while cruising, the iE valved cat-back exhaust provides adjustable sound control tailored to your driving preferences.
