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BeamNG.tech

Exhaust Modifier

This feature is supported as of BeamNG.tech and .drive version 0.6.0 to latest.

Exhaust modifiers are additional parameters used on exhaust nodes to modify exhaust noise and afterfire.

Their modifier is applied if they are part of an exhaust tree that is connected to the engine, allowing you to have an exhaust that can be removed in crashes, causing the car to become louder.

You can have multiple nodes with exhaust modifiers on the same tree, with their coefficients getting multiplied. This means that if you have, for example, 2 nodes with an afterfire visual coefficient of 0.5 on the same exhaust will result in a total afterfire visual coefficient of 0.25.

 Arguments

afterFireAudioCoef
name
number
type
1
default
How many audio effects are produced (pops and bangs)
afterFireVolumeCoef
name
number
type
1
default
How loud the audio effects are (pops and bangs)
afterFireMufflingCoef
name
number
type
1
default
How muffled the audio effects are (pops and bangs)
afterFireVisualCoef
name
number
type
1
default
How many visual effects are produced (pops and bangs)
exhaustAudioMufflingCoef
name
number
type
1
default
Multiplier of the exhaust muffling. 0 is fully muffled and 1 is fully unmuffled.
The multiplication is done using the inverse of this coefficient. Meaning 2 nodes with a coefficient of 0.5 muffling will actually result in 0.75 muffling.
exhaustAudioGainChange
name
number
type
0
default
Volume change (in dB) of the exhaust sound.
Unlike the other values, these add up along the exhaust tree.

 Simple Example 

["exh6",0.82,0.60,0.2, {"selfCollision":false,"afterFireAudioCoef":0.0,"afterFireVisualCoef":0, "exhaustAudioMufflingCoef": 0.2, "exhaustAudioGainChange":-6}],
Last modified: August 14, 2025

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