Audi S8 4H D4 CB2 ASR exhaust flap control

ASR flap control CB2 – For Audi S8 4H D4

With the ASR flap control CB2 Get the most out of your Audi S8 4H D4. Control your exhaust flaps conveniently via the Drive Select-system or via ESP button – entirely without additional switches or modifications to the vehicle electronics.

This solution offers full control over the engine sound and allows for easy adaptation to your driving style – from a sporty, dynamic sound to comfortable restraint.

Features at a glance

Drive Select control (Individual – Engine sound):

• Dynamic: flaps permanently open

• Car: Flaps open at 3000 rpm or 80% accelerator pedal (just before kickdown)

• Comfort: Flaps open at 4500 rpm or 80% accelerator pedal (just before kickdown)

Easy Switch (double click ESP button):
Regardless of the driving profile, the flaps can be opened or closed by double-clicking the ESP button. The automatic opening function above 4500 rpm remains active at all times.

Series mode/Workshop mode:
The module can be activated or deactivated via a key combination. When deactivated, the vehicle behaves as if it were in its original factory condition – ideal for workshop visits.

Assembly && Features

• Plug &Play Montage – No soldering or programming required

• Reversible without leaving any trace

• No error message in memory

• Designed for electric flap systems – safe and reliable operation

• Made in Germany – Quality and precision

Handheld transmitter

• Elegant design with brushed stainless steel front

• Long range

• High-quality workmanship

Notes

• No approval in the area of StVZO – only for the motorsport

• The flaps should not be completely closed at full load.

• Installation at your own risk – no liability for damages

• Product image may differ

Scope of delivery

• ASR flap control CB2 module

• Handheld transmitter

• Connection cable set

• Installation instructions

We receive a large number of custom orders and inquiries daily, so it's not always possible for us to have every item in stock at all times. If you need the item urgently, please contact us. here to our sales team, to check stock levels before making your purchase.

We completely understand if you are unsure whether a part is compatible with your car. Therefore, we strongly recommend that you contact your vehicle manufacturer here. Inquiry to us Please contact us. Our friendly sales team will then get in touch with you to confirm if this part is the correct one you are looking for.

All our products come with a standard 2-year warranty. However, this depends on the type of product. See details below. here.

At Upgrade my Car (R-Trade GmbH), we place great importance on fully informing our customers about the intended use of our products. Please note that, unless otherwise specified, all our products are specifically designed for professional racing use. They are intended exclusively for use in competitions on racetracks sanctioned by an officially recognized racing organization. We would like to point out that any use of our products outside of these conditions, including recreational off-road driving, may potentially violate local, state, or federal laws. It is important to understand that Upgrade my Car (R-Trade GmbH) assumes no liability for the legality of using our products on public roads. The responsibility for complying with applicable laws lies solely with the purchaser. We strongly recommend that our customers familiarize themselves with and comply with the relevant legal regulations before using our products.