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

13

Active Grill Shutter

96

Adblue Disable

136

Additive Disable

9

BMS

1

Boost Sensor Calibration

39

Cat Heating Off

4

Checksums Calculator

904

Cold Start Noise Reduction

48

Cold start Wastegate Rattle Fix

4

Deep Idle Activation

39

DPF Disable

268

DTC Disable

511

EGR Disable

364

Engine Heat Fix

34

Evap Disable

146

Exhaust Flap Always Open

16

Exhaust Flap Removal

135

Fuel Pump Calibration

5

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

191

GPF/OPF Disable

61