TurboFix

Overhauls how the turbo works, for more useful performance and new effects.

📥Releases

• Features
• Requirements
• Installation
• Menu opening
• Creating configs from scratch
  • Configuration file layout
  • Combining with fInitialDriveForce
• Adding sounds
• Developers
• Credits

Features

• Unlock turbo boost limits
  The original turbo only adds 10% torque when fully spooled up.
  This script unlocks that for much more boost and resulting power!
• Better turbo spooling
  The original turbo takes a very long time to spool up to full boost.
  This script makes it to spool up as quickly as your configuration allows, for realistic turbo lag.
• Anti-lag and effects
  Optionally simulate anti-lag by keeping boost high off-throttle.
  Optionally play visual and audio effects while anti-lag is active!
  Works best combined with Manual Transmission
• Supports NPC vehicles
  Combines great with ARS by Eddlm for competitive AI performance
• Turbo dial adjustments with DashHook
  Vehicles’ turbo dials are remappable to accurately show boost

Requirements

• Grand Theft Auto V
• ScriptHookV

Optional:

• DashHook
• Manual Transmission

Installation

1. Drag and drop the following files into your GTA V folder.
   1. TurboFix.asi
   2. TurboFix folder
   3. irrKlang.dll
2. In-game: Immediately works for all cars with the turbo tuning upgrade installed
3. In-game: Use turbofix cheat to open the menu (see “Menu opening”)
   1. Menu can be used to view, customize and save configurations

Menu opening

1. Open the cheat box with tilde key (~)
2. Enter the “turbofix” cheat without quotes

The menu opening cheat and other shortcuts may be changed in settings_menu.ini. Usable buttons are in Keys_Controls.txt.

Creating configs from scratch

Configs can be manually made when not using the in-game menu, check TurboFix/Configs/INSTRUCTIONS.txt for info.

Configuration file layout

Section ID

• ModelHash - Vehicle model hash this config should automatically apply to.
• ModelName - Vehicle model name used to identify the vehicle and derive its model hash.
• Plate - License plate this config should match for a specific vehicle.
• Models - Legacy option containing one or more vehicle model names; only the first is used.
• Plates - Legacy option containing one or more license plates; only the first is used.

If no model is specified, the config is generic and will not automatically be associated with a vehicle.

Section Turbo

• ForceTurbo - Automatically installs the turbo upgrade when the config is loaded.
• RPMSpoolStart - Relative RPM at which the turbo starts building boost.
• RPMSpoolEnd - Relative RPM at which the turbo can reach maximum boost.
• MinBoost - Maximum vacuum value used when the turbo is not producing boost.
• MaxBoost - Maximum boost value, where 1.0 adds 10% engine power.
• SpoolRate - Controls how quickly boost rises toward its target value. 0.9 means it reaches 90% of its target boost after 1 second. 0.999 means almost instant.
• UnspoolRate - Controls how quickly boost falls when the turbo is no longer being driven.
• FalloffRPM - Relative RPM above which boost starts dropping toward redline.
• FalloffBoost - Boost level reached at redline when boost falloff is enabled.

RPM values are normalized, with 1.0 representing the rev limit; boost falloff is only active when FalloffRPM is higher than RPMSpoolEnd.

Section BoostByGear

• Enable - Enables per-gear boost limiting.
• 1-10 - Defines maximum boost allowed in specified gear.

Only the configured gear entries are used, up to a maximum of 10 gears. Every used gear needs to be present.

Section AntiLag

• Enable - Keeps the turbo spooled while off-throttle at sufficiently high RPM.
• MinRPM - Minimum RPM fraction at which anti-lag becomes active.
• Effects - Enables anti-lag exhaust pops, bangs, flames, and sound effects.
• PeriodMs - Minimum delay in milliseconds between anti-lag effects.
• RandomMs - Adds a random delay of up to this many milliseconds between anti-lag effects.
• LoudOffThrottle - Continues producing the louder pops and bangs after the initial throttle lift.
• LoudOffThrottleIntervalMs - Minimum interval in milliseconds between loud off-throttle effects.
• SoundSet - Selects the sound set used for anti-lag effects, such as Default or NoSound.
• Volume - Controls the volume of anti-lag sound effects.

Section Dial

• BoostOffset - Adds an offset to the boost value sent to the dashboard boost gauge.
• BoostScale - Scales the boost value sent to the dashboard boost gauge.
• VacuumOffset - Adds an offset to the vacuum value sent to the dashboard gauge.
• VacuumScale - Scales the vacuum value sent to the dashboard gauge.
• BoostIncludesVacuum - Maps vacuum onto the boost gauge as well, for combined vacuum/boost gauges.

TurboFix may use DashHook on vehicles with a boost gauge, to change its behavior to better match what the turbo is doing.

Combining with fInitialDriveForce

You can combine a lower fInitialDriveForce in the vehicle’s handling with a TurboFix config to split the car’s power delivery into base engine output and turbo-added output: lower fInitialDriveForce until the naturally aspirated/off-boost power/torque represents the grunt you want the engine itself to make, then use MaxBoost, RPMSpoolStart, RPMSpoolEnd, and SpoolRate to add the remaining performance progressively as the turbo comes on boost. This can make a turbocharged engine feel much less like it has its full torque everywhere and give it a clearer transition from off-boost performance into its boosted power band.

Adding sounds

Sound sets can be added by creating a new folder in the Sounds folder. Files need to be of type .wav.

Files inside the new folder should be named:

• EX_POP_0.wav
• EX_POP_(number).wav
• EX_POP_SUB.wav

For example, to get 16 sounds playing, name your files EX_POP_0.wav through EX_POP_15.wav.

The script randomly picks a numbered exhaust sound. EX_POP_SUB.wav always plays.

Developers

In the release archive, in TurboFix/Developers, the current header with exposed TurboFix functions is available.

This can be used to retrieve the mod status and applicable boost information.

Credits

• Audio for anti-lag by Dieguuuds