Audi S8 4H D4 CB2 ASR exhaust flap control

ASR flap control CB2 – For Audi S8 4H D4

With the ASR CB2 exhaust flap control system , you get the maximum performance from your Audi S8 4H D4. Control your exhaust flaps conveniently via the Drive Select system or the ESP button – all 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 from 3000 rpm or 80% accelerator pedal (just before kickdown)

• Comfort: Flaps open from 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 assembly – no soldering or programming required

• Reversible without leaving any trace

• No error message in memory

• Designed for electric flap systems – safe and durable operation

• Made in Germany – Quality and precision

Handheld transmitter

• Elegant design with brushed stainless steel front

• Long range

• High-quality workmanship

Notes

• Not approved for road use – for racing only

• 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