ALS: Anti-Lag System

Anti-lag on every turbocharged car BeamNG ships.

If you want the cars from other mods as well, there are two ways: the universal release linked above, or a build of your own with --mods (Running the build). The universal release needs no build, but it replaces the game's own turbocharger code, which is why it is not on beamng.com.

The mod adds one function: anti-lag. Everything else about the turbo stays as it was. Vanilla anti-lag parts have their power written into jbeam; here it is calculated from that turbo's own wastegate pressure and pressure curve, which lands on the same kind of numbers.

Controls

Key	Action	What it does
K	Toggle ALS	Default is on
NumPad +	Scramble	Toggle: raises the boost set point for an overboost until pressed again
U	Rolling anti-lag	Hold to keep anti-lag running while driving
;	Rolling launch	The rev cut jumps to the RPM the engine is at, and anti-lag is forced on

The four actions sit under Vehicle Specific (installed parts) in Settings → Controls.

They also show up in the in-game bindings legend:

Parts

The mod ships an ALS variant of the engine-management part of every turbocharged car. It is installed like any other part, under Engine Management in the vehicle config:

Tuning

Every ALS part adds two sliders under Engine:

• Scramble overboost: 0 to 30 psi added while the scramble key is active (default 10). If the turbo already sits at its physical ceiling and cannot spin faster, the extra pressure will not appear, or will be smaller than the slider says.
• Wastegate pressure: raises the pressure the wastegate holds, up to the top of that turbo's own curve. It only shows up where the stock part has no wastegate slider.

Running the build

python build.py                              # auto-detects the game, writes the mod into build/
python build.py --install                    # builds straight into current/mods/unpacked/als
python build.py --mods                       # also cover the vehicles in current/mods/repo
python build.py "D:\Games\BeamNG.drive" --install   # point at the game explicitly

The game directory is optional. No dependencies beyond the standard library. --mods is what pulls the vehicles from other mods into the build; the published mod is built without it.

The table it prints marks each vehicle:

• [MOD] - the vehicle exists only in a mod
• [+mod] - a stock vehicle a mod adds parts to
• no marker - stock files only

License

beamNG Common Development and Distribution License (bCDDL), v1.1. See LICENSE.