exhaust_flap_removal

Exhaust Flap Removal

The Exhaust Flap is a crucial component installed within the final muffler of a vehicle. Its primary purpose is to reduce noise during cold start conditions, which can often be louder and more disruptive. This valve helps to create a more pleasant auditory experience, especially in residential areas or during early morning starts.

However, for those who prefer a more aggressive sound profile or who wish to enhance their vehicle’s performance, there are options available to modify or disable the exhaust flap’s function. When the AutoHex module solution is applied, the exhaust flap will remain open under all conditions. This modification allows for a more consistent exhaust note, which can be particularly appealing to enthusiasts looking for a sportier sound.

Additionally, this solution is particularly beneficial when the final muffler has been removed or replaced, as it ensures that the exhaust system can operate without the constraints of the flap. In some vehicles from the VAG (Volkswagen Audi Group) lineup, the exhaust flap is also controlled by the selection of Sport Mode. When in Sport Mode, the vehicle typically enhances performance characteristics, including exhaust sound.

By utilizing the AutoHex module to keep the exhaust flap open, drivers can enjoy a more robust and dynamic exhaust note, regardless of driving conditions or modes. This flexibility not only enhances the driving experience but also allows for greater customization of the vehicle’s sound profile, making it an attractive option for automotive enthusiasts and those looking to personalize their vehicle’s performance.

IMPORTANT — MODULE INCLUDED ONLY IN THE PROFESSIONAL PACKAGE.

The exhaust-flap Module operates exclusively on supported firmware versions.

Below is the list of vehicles currently compatible with the exhaust-flap Module:

Car Brand
ECU Producer

Other modules

Active Cylinder

5

Active Grill Shutter

85

Adblue Disable

136

Additive Disable

9

BMS

1

Boost Sensor Calibration

16

Cat Heating Off

1

Checksums Calculator

890

Cold Start Noise Reduction

34

Deep Idle Activation

39

DPF Disable

259

DTC Disable

488

EGR Disable

354

Evap Disable

130

Exhaust Flap Removal

126

Gearbox Clutch Pressure

6

Gearbox Gear Display

6

Gearbox Kickdown

1

Gearbox Launch Control

19

Gearbox Oil Pressure

6

Gearbox Revlimiter

21

Gearbox Shift Timing

20

Gearbox Speedlimiter

12

Gearbox Torque

26

Glow Plug Disable

182

GPF/OPF Disable

54

Hardcut Popcorn Activation

125

Hot Start

232

IMMO

71

Injector Scaling

14