Roar 4X4 Throttle Controller — Toyota Hiace H300

Toyota HiAce H300 throttle controller

For the Toyota HiAce H300, the Roar 4X4 Performance Throttle Controller is a plug-and-play unit that reduces throttle lag and gives a sharper accelerator response. This vehicle uses plug type 830. The controller suits touring and towing, on-road and off-road, with that sharper response available for both kinds of driving.

Product Specifications

Vehicle Compatibility — Does This Fit My HiAce H300?

Check the compatibility table above to confirm this throttle controller fits your exact vehicle. Not listed? Contact our team or use our Vehicle Compatibility Finder.

Key Features

• ✅ Eliminates Throttle Lag — Instant throttle response for smoother, faster acceleration
• ✅ 6 Driving Modes — Economy, Off, Comfort, Sport, Race, and Auto to suit any driving condition
• ✅ 9 Sensitivity Levels — Fine-tune throttle response to your exact preference
• ✅ AI Learning Mode — Adapts to your driving style over time for optimal performance
• ✅ Anti-Theft Security Mode — Reduces throttle input to prevent unauthorised vehicle use
• ✅ Day/Night Sensor — Auto-brightness control for safe, glare-free viewing
• ✅ Transmission Settings — Manual (HHH) or Auto (AAA) modes for precise control
• ✅ Instant Overtake Boost — Long-press M button to jump into Race Mode for immediate passing power
• ✅ 100% Plug & Play — No cutting, no splicing, no tools required. Plug Type 830 pre-matched for your HiAce H300

Why Fit a Throttle Controller to Your Toyota HiAce H300?

Modern drive-by-wire vehicles like the Toyota HiAce H300 use electronic throttle control, which introduces a factory-programmed delay between pressing the accelerator and engine response. This "throttle lag" is most noticeable when merging, overtaking, towing, or driving off-road.

The Roar 4X4 Throttle Controller remaps the throttle signal to deliver your engine's existing power faster. It doesn't increase horsepower or torque — it eliminates the delay so you feel the power sooner. Sport and Race modes provide sharper response for overtaking and off-road driving.

What's in the Box

• ✅ Roar 4X4 Performance Throttle Controller Unit — With LCD display
• ✅ Vehicle-Specific Wiring Harness — Plug Type 830 for Toyota HiAce H300
• ✅ Mounting Bracket & Adhesive Pad — For dashboard mounting
• ✅ Fitting Instructions — Universal installation guide

Confirm your plug — please check your plug type as per the picture

Before you install, match the plug-face photo in the gallery to the connector on your accelerator pedal. Pin layout, housing shape, and lock colour must match. Then download the installation instructions for verification. If you are unsure, contact support with a clear photo of your plug before ordering.

• Please check your plug type as per the picture before install.
• Unplug the pedal connector and compare pin layout / housing / lock colour.
• Download installation instructions for verification: TC instruction manual (PDF).
• If it does not match, or you are unsure, contact support with a clear photo of your plug.

Fitting Instructions — Throttle Controller Installation

🔧 Setup is a very simple plug-and-play process. No tools required.

1. Locate Throttle Pedal: Find the electronic connector on your HiAce H300's accelerator pedal — it's the plug at the top of the pedal.
2. Plug In Controller: Disconnect the factory connector. Plug the Roar controller (Plug 830) between the pedal and factory harness.
3. Mount & Drive: Secure the display on your dashboard. Start your HiAce H300 and select your preferred driving mode. Done!

Installation is the same for all vehicles — simply match the plug type to your accelerator pedal connector. No cutting, splicing, or tools required. Fully reversible — remove anytime to return to factory settings.

Frequently Asked Questions — Toyota HiAce H300 Throttle Controller

How do I know Plug Type 830 is correct for my HiAce H300?

Plug Type 830 is confirmed compatible with the Toyota HiAce H300. The connector is specifically designed to match your vehicle's electronic throttle pedal. If you're unsure, contact our team with your vehicle details.

Does it increase power or just throttle response?

The throttle controller adjusts how quickly your HiAce H300's existing power is delivered — it does not increase horsepower or torque. It remaps the throttle signal so you feel the power sooner, eliminating the factory-programmed delay.

Can I use it while towing with my HiAce H300?

Absolutely. Many HiAce H300 owners use Sport or Race mode while towing to get better response when merging, overtaking, or climbing hills.

Is it compatible with aftermarket ECU tunes or chips?

Yes. The throttle controller works independently of ECU tunes, performance chips, or exhaust modifications. It complements these upgrades by giving you finer control over throttle delivery.

What does Anti-Theft Mode do?

Anti-Theft Mode dramatically reduces throttle input, making the vehicle very difficult to drive. This provides an additional layer of security against unauthorised use of your HiAce H300.

Shipping & Returns

📦 Shipping: Free shipping on throttle controllers within Australia. In-stock items typically dispatch within 2–5 business days. Allow 2–14 business days in transit depending on location. Australia only — we do not ship to P.O. boxes. Shipping for other products is calculated at checkout.

↩️ Returns: If an item arrives faulty, damaged or incorrect, email admin@roar4x4.com within 30 days of delivery with your order number and photos. See our Refund policy for details.