- Diesel Performance
Remap or Multimap, Whats right for you?
Looking to get more out of your Toyota? Whether you’re chasing extra torque for towing or dynamic control for every terrain, Just Autos offers two powerful tuning options: a performance-driven Remap or a versatile Multi‑Map setup. Here’s what you need to know to choose the right one.
What is an ECU remap?
ECU Remapping (also known as reflashing) is the process of modifying your engine’s stock software to unlock more power, torque, and efficiency. By fine‑tuning boost pressure, fuel delivery, ignition timing, and throttle mapping, our technicians safely release untapped engine potential.
You can expect gains of 20–30 % more power and torque, with sharper throttle response, reduced turbo lag, and smoother performance.
What Is Multi‑Mapping?
Multi‑Mapping takes the concept further by installing multiple custom maps on your ECU — accessible via your existing cruise control stalk, with other control options also available to suit your preference.
For example, your 300 Series can access up to six tailor-made maps:
Stock+
Immobiliser (engine starts but won’t move)
Idle‑Up / Winch Mode (higher idle for winching or charging)
Tow Mode (enhanced low‑end torque and engine braking)
Power
Power+ (performance driving with launch control)
Multimapping is all about flexibility — switch maps on the fly for different conditions or driving needs.
| Feature | Remap | Multimap |
|---|---|---|
| Single performance map | ✔ | ✘ |
| Multiple selectable maps | ✘ | ✔ |
| Switch maps from cabin | ✘ | ✔ |
| Idle-up / Winch mode support | ✘ | ✔ |
| Power & Tow tuning included | ✔ | ✔ |
| Immobiliser security mode | ✘ | ✔ |
| Improved throttle response | ✔ | ✔ |
| Requires extra hardware | ✘ Software only | ✔ Control switch or stalk |
| Installation time | 1 Day | 3 Days |
| Best for daily driving | ✔ Simple & effective | ✔ Flexible with multiple modes |
| Best for touring & off-road | ✔ With tuned tow map | ✔ Built-in touring modes |
| Closed-loop EGT protection * | ✘ | ✔ |
| Manual shift via cruise control * | ✘ | ✔ |
| Throttle controller integration * | ✘ | ✔ |
| Engine protection warning * (Flashes check engine light at high temps) |
✘ | ✔ |
* Features marked with an asterisk are available on selected vehicle models only.
Which One Do You Need?
🔧 A Single Remap Is Ideal If You:
Want a simple power upgrade
Use your vehicle mostly for commuting or regular towing
Want quick install
⚙️ Multi‑Mapping Is Ideal If You:
Frequently switch between tasks (e.g. towing, off‑roading)
Want versatile maps for differing terrains or loads
Value being able to change engine behaviour on the fly
Already run performance hardware and need multiple map profiles
Installing with Just Autos
We offer ECU Remapping and Multi‑Mapping solutions tailored to Toyota diesel models including the 300 Series Land Cruiser, 200 Series, VDJ70/79, Hilux, Prado, and more.
Your factory file is safely retained in our system, giving you flexibility down the track if your needs ever change.
Multi‑Mapping installations are done cleanly with no unnecessary clutter — utilising your vehicle’s existing cruise control stalk or other integrated control options.
Allow 1 day in the workshop for a standard remap, and 2–3 days for a full Multi‑Mapping setup.
Need Help Deciding?
Not sure which route fits your setup? We’re happy to help you figure out:
Multimapping
Unlock your vehicle’s hidden potential with custom engine tuning that delivers optimal power and efficiency at the touch of a button.
Remap
Unlock your vehicle’s hidden potential with a single custom remap designed to maximise power, torque, and efficiency — all without extra hardware or switches.
FAQs & Considerations
Will tuning void my warranty?
It depends on your warranty provider — discuss with us and your dealer. We’re happy to help minimise risks
Will remapping damage my engine?
Not when done professionally. Every map is curated to stay within safe parameters based on manufacturer and performance testin
Can I do it myself?
DIY ECU remaps exist, but they’re risky. We recommend expert tuning experience and dyno-verified software
What if I upgrade hardware later?
You can remap again — we always save your original mapping.
