Technical Documentation

Motorfest Speedometer

By RexMods Version 1.1.0-beta 4 min read
⚠️ Beta Release Notice

Welcome to version 1.1.0-betaI am happy to announce that the mod is now stable and completely crash free based on my testing. To ensure stability and visual correctness, some settings related to opacity from the old version have been reduced. As this is a beta version, you may encounter minor visual glitches, but these will not affect functionality or cause your game to crash.

Contents Index

Overview

The Motorfest Speedometer brings a highly dynamic, fully customizable, and visually striking HUD to Grand Theft Auto V, inspired by The Crew Motorfest.

This mod goes beyond visuals. It features a completely custom built vehicle dynamics system, providing real-time Driving Assists (ABS, ESP and TCS). Whether you are using a keyboard or a controller, the robust input system ensures seamless control over your vehicle and your settings. Everything from the gauge size to the needle sweep arc can be customised in-game via a clean, intuitive menu.

Changelog

v1.1.0-beta

Major Updates & Fixes

Tweaks & Bug Fixes (Carried Over)

Core Features

Motorfest-Inspired UI

A sleek, modern gauge featuring smooth RPM sweeps, speed digits, gear indicators and dynamic needle colour changes at redline.

Nitro System (New in Beta)

A fully integrated nitro gauge that visualizes your boost capacity as a dynamic arc that fills up. This is a first working version of the system and may be refined further in future updates.

Complete Layout Control

Almost every visual element (gauge, needle, sweep arc, halftone, text, icons, and units) can be resized, repositioned, rotated and adjusted directly in-game.

Themes

Choose from 6 built-in gauge background themes:

Flawless Input Handling

Advanced hardware detection ensures that keyboard inputs (like W/A/S/D) never cross-talk or interfere with your Gamepad controls.

Immersive HUD Control

Option to automatically hide the vehicle, street name info while the mod is active.

Advanced Driving Assists

The mod includes a custom-tuned vehicle intervention system. These assists are not realistic real-life counterparts, they are game level handling tweaks designed to mimic the behaviour of traction, stability and braking aids. They may be refined further in future updates.

The assist states act as true switches: once you enable or disable them, they stay exactly as you set them, regardless of your driving.

When an assist is Enabled, it monitors the car. When it becomes Active, the corresponding icon on the speedometer will blink to let you know it is stepping in to help you keep control.

Both TCS and ABS feature configurable modes (Mild and Sporty) depending on your driving style.

ABS (Assisted Braking System)

Improves braking response and helps you stop smoothly under heavy braking. It does not simulate a true anti-lock system but instead applies a custom brake force adjustment that makes deceleration feel more controlled and responsive, so you can maintain steering while braking.

ESP (Electronic Stability Program)

Works at higher speeds to reduce sliding. If the car begins to drift or spin, ESP subtly cuts engine power and applies drag to pull the vehicle back into a straight line. It is a simplified handling aid.

TCS (Traction Control System)

Detects excessive wheelspin during hard acceleration and smoothly reduces engine power to help you grip the road. It acts as a power limiter to prevent unwanted wheel slip, giving you more consistent launches.

Note: These are still not 100% accurate and will depend on the car's handling.

Default Controls

All controls can be fully remapped via the MotorfestSpeedometer.ini file. The mod supports both Keyboard and Controller.

Keyboard

KeyAction
F6Open the Settings & Layout Menu
ZStart / Stop Engine
NumPad 1Toggle ABS
NumPad 2Toggle ESP
NumPad 3Toggle TCS

Gamepad

Note: Experimental

InputAction
Interaction Menu Button (Hold/Press)Open Menu
D-Pad Down (ScriptRDown)Start / Stop Engine
D-Pad UpToggle ABS
D-Pad RightToggle ESP
D-Pad DownToggle TCS

Menu navigation uses standard UI Accept / Cancel / D-Pad controls.

Official Distribution

This mod is officially distributed only through the following verified platforms:

Security Notice
Only trust the sources listed above

If this mod was downloaded from any other website, it was not authorized by me, even if that site credits me as the author. Unofficial copies may be outdated, modified, incomplete, deprecated or bundled with malware, viruses, or other unwanted files.

I am not responsible for any damage, game issues, or crashes they cause. Support is exclusively provided for authenticated copies.

Installation

Step 1 — Install Required Tools

Step 2 — Copy Mod Files

Place MotorfestSpeedometer.dll and MotorfestSpeedometer.ini into your GTA V "scripts" folder.

Step 3 — Install Texture Pack (OpenIV required)

Open OpenIV and navigate to:

mods\update\update.rpf\x64\data\cdimages\scaleform_generic.rpf\

Drag and drop the provided texture dictionaries (MotorfestGauge.ytd and MotorfestDigits.ytd) into this folder.

Launch the game, enter a vehicle, and press F6 to open the menu.

Troubleshooting & Logging

This mod includes a highly detailed, lightweight diagnostic logger.

If the mod fails to load, crashes, or an assist behaves unexpectedly, navigate to your scripts folder and open MFLog.txt.

Beta Notice: While the mod is stable and crash-free, you may still experience minor visual glitches due to its beta status. If you spot any, please report them along with your log file!

This file strictly records:

If you need to report a bug, please include the contents of this log file to help pinpoint the issue immediately.

Credits

DeveloperRex Mods
LemonUI frameworkjustalemon
Script Hook V .NetChiheb-Bacha
Script Hook VAlexander Blade
Community resourcesJulioNIB

Support & Usage

Licensing & Usage Policy

If you encounter any bugs, please report them in my discord with details from your MFLog.txt.

Please respect the time and effort put into this project by not reuploading this mod to other websites or including it in public mod packs without asking first.

You are completely free to use this mod, but please do not distribute altered versions or claim the work as your own. If you want to share this mod with others, please link them directly to the original download page.