FH2 AntiLag

5. The Extra Options loader discovers new mod folders automatically. If this mod was previously disabled in mods/loadorder.txt, uncomment its exact folder entry. Restart the game.

Usage

In the workshop, select Engine → Turbo / Twin Turbo and equip Race Turbo with Anti-Lag or Race Twin Turbo with Anti-Lag. The normal turbo does not enable anti-lag. After changing from twin to single turbo, equip the corresponding special single-turbo part.

Accelerate to build boost, then release the throttle. Anti-lag retains part of the attained turbo state and requests native exhaust pops and flames. Reapplying throttle cancels the lift-off effect. F7 toggles anti-lag during driving; toggling does not save the switch to the INI.

The default cutoff is 1800 RPM and charging requires at least 2500 RPM, sufficient throttle and boost. Effect duration depends on pressure, RPM and pedal input; the 6000 ms decay setting is not a guaranteed six-second effect.

Workshop behaviour

•Adds a separate part without replacing existing turbo parts.

•Uses the corresponding race turbo's physical specifications, with a 2000-credit price premium. The PI calculation does not account for the anti-lag advantage.

•Generates parts from eligible race-turbo rows in the merged in-memory database. The original game database is not modified on disk.

•The original database yields 151 single-turbo and 170 twin-turbo part rows; these are engine variants, not a count of cars.

•Part names/descriptions include BR, CHT, CZ, DE, EN, ES, FR, GB, HU, IT, JP, KO, MX, NL, PL and RU text. DEV/LOC use English. These are community translations.

Save data and removal

The plugin does not directly edit save files. The game's normal autosave can save purchases and equipped custom parts. Keep the mod available while those parts are equipped.

Before disabling, uninstalling or downgrading to a version without the workshop catalogue, equip an original game turbo on every affected car, then allow the game to save. Close the game and remove only this mod folder. Do not restore older saves automatically.

Compatibility and beta status

The tester confirmed the workshop part appears and works, including a twin-to-single race-turbo-with-anti-lag change on the RX-7 FD. Catalogue transactions, collision rollback, part gating and native string merging were tested separately. Menu layout in every language, broad vehicle compatibility and all purchase/save/reload scenarios have not been exhaustively verified.

Added cars and engine swaps may work when they supply compatible race-turbo rows before the provider runs. Compatibility with arbitrary car mods is not guaranteed. Existing single/twin level-4 parts, reserved-ID collisions, or modifications to hooked native code can cause this plugin to refuse activation. Report your exact mod versions and load order when requesting support.

Sounds and effects use FH2's native events. This does not include or reproduce FH5/FH6 audio assets. Check plugins/EO_AntiLag.log and FH2_ExtraOptions.log if a part or effect is missing. Share only relevant log excerpts; do not upload saves or personal backups to issues.

Building

Source is in src. With Python 3 and a compatible Windows x64 GCC/Clang toolchain available, run python Build.py. The output is build/EO_AntiLag.dll; copy it to the mod's plugins folder when packaging. Generated signatures.h and catalog_sql.h are included, so the game executable is not needed to build this version. catalog.sql is the readable catalogue source.

Credits and licence

Maintained/published by erikzensounds. Built against RokkuDayo's Forza Horizon 2 Extra Options, using its plugin SDK and adapted guarded-hook support. The upstream hoo