Just autos wa
Your Just Autos Distributor and Installation Hub for Professional 4WD Diesel Tuning and Heavy-Duty Performance Packages.
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upgrades for your Toyota
This package serves as the baseline performance entry point, focusing heavily on fixing common factory quirks while giving the vehicle a reliable bump in power. It includes Just Autos' signature ECU multimapping, a custom intake pipe to significantly reduce the factory engine surge, and a bolt-on heat exchanger to keep intake temperatures stable.
Stepping up to the mid-tier option introduces heavy-duty hardware upgrades to match the increased software capabilities. Alongside the multimapping, intake pipe, and heat exchanger, it swaps out the plastic factory airbox for a heavy-duty aluminum version that retains the easily sourceable factory filter. It also adds a custom underbody fuel filter bracket to protect the vulnerable, brittle plastic housing from rocks and track debris.
The flagship package maximizes the breathing capacity of the twin-turbo V6 from entry to exit. It takes everything included in Package 2 and pairs it with a 4-inch TIG-welded 304 stainless steel exhaust system for maximum flow and a deep note, alongside a Safari or stainless steel snorkel for clean, dust-free air induction. This combination unlocks a massive power increase of up to 90% over standard factory numbers.
The essential starting point that completely changes the sluggish nature of the stock V8. Combines an in-house ECU multimap (via cruise control or OBD CAM bus switch) with a high-flow 4-inch exhaust system and an upgraded 1600 Nm heavy-duty clutch to prevent factory clutch slippage under load.
Engineered for hot conditions and consistent heavy highway cruising. It expands on Package 1 by adding a premium Australian-made aluminum airbox with milled sealing rings, a snorkel option, and a heavy-duty dual-fan kit with Deutsch connectors to drop intake temperatures for better fuel economy and prolonged power.
The absolute performance benchmark for heavy towing and agricultural use. This package features the ultimate bolt-on upgrade: a brand-new, customized genuine Garrett JA300 turbocharger. Supported by a true 3-inch turbo inlet pipe, engine mount modification, aluminum airbox, fan kit, 4-inch exhaust, and 1600 Nm clutch, it delivers a massive 300HP and 1,000Nm of ground-shaking torque.
The best "bang-for-buck" touring modification available. Delivers a solid 30% to 40% gain in power through a combined custom engine remap and specialized automatic transmission remap, working in unison with a software-based converter lockup system to control transmission heat.
Maximizes playful engine response and highway cruising efficiency. Combines the matched engine tune, transmission remap, and lockup kit from Package 1 with a high-flowing Manta twin 3.5-inch into a single 4-inch performance exhaust system, tailored to your preferred sound levels.
The top-tier modification package for ultimate 200 Series performance. Integrates the comprehensive tuning, transmission logic, and exhaust system of Package 2 with a set of custom high-flow injectors—delivering optimized fueling at the perfect time to clear up common stock injector flaws and unlock peak power output.
Built for daily dependability and weekend caravanning. Features a sophisticated 6-map ECU multimapping system with built-in advanced engine protection parameters (EGT, coolant, and intake safety cutbacks) and integrated 6-stage throttle profile control, allowing drivers to dial in exact pedal responsiveness.
The ultimate performance and airflow revamp for the new Prado platform. It takes the custom software mapping and safety features of Package 1 and pairs it with a custom high-flow aluminum airbox utilizing a massive 79 Series filter element to reduce turbo speed stress, alongside a 304 stainless steel TIG-welded 4-inch exhaust system.
An absolute bang-for-buck performance baseline that transforms the sluggish 130HP stock output up to a crisp 200HP and 600Nm of torque. Includes a precision Just Autos custom engine remap with the optional addition of an Easy Lock converter lockup system to keep transmission temperatures controlled during heavy use.
Specifically designed to cure the sluggish standard performance of the 1KD engine. This straightforward package delivers a custom in-house dyno remap that safely jumps power from 125HP up to approximately 180HP, lifting torque to a muscular 500Nm. Manual variants are supported by a heavy-duty clutch replacement to cleanly handle the new power.
HARDWARE PERFORMANCE UPGRADES
Remap & Multimapping
Unlock your vehicle’s hidden potential with custom engine tuning that delivers optimal power and efficiency at the touch of a button.
Turbo & Injectors
Boost power and performance with upgraded turbos and fuel systems
Transmission Lock-up Kits
Reduce transmission slip to support better towing performance and consistent drivability under load.
Airbox Upgrade
Our performance airbox upgrades are designed to improve airflow and support more consistent filtration, helping your engine perform at its best when it matters most.
Custom Upgrade Package
With experience across all Hilux models, we offer custom performance packages that are adjustable to cater to 3.0L & 2.8L models.
ECURemap & Multi-mapping
Unlock your vehicle’s hidden potential with custom engine tuning that delivers enhanced power and responsiveness—at the touch of a button.
Performance Exhaust
Our full stainless-steel exhaust systems feature mandrel-bent designs for improved airflow and a deep, aggressive tone that performance enthusiasts appreciate.
Airbox System
Improve airflow, Support better filtration and help protect your engine from dust related wear with our airbox upgrade
ECU Remap & Multi-mapping
Unlock your vehicle’s untapped potential with custom engine tuning designed to deliver enhanced power and drivability—at the touch of a button.
Exhausts Systems
Unlock better airflow and a deeper, more aggressive exhaust note with our stainless steel performance exhaust systems.
Transmission Lock-up Kits
Reduce transmission slip to support better towing performance and consistent drivability under load.
Clutch
Factory clutches often slip and fail under increased power. When upgrading with Just Autos, we offer performance and NPC heavy-duty clutch upgrades to handle the extra torque and ensure long-term durability.
Performance Exhausts
Upgrade to a high-flow 3- or 4-inch exhaust for more torque, power, and that signature V8 roar.
Intercooler & Fans
Keep your engine cool and running smoothly with intercooler and fan upgrades designed for heavy-duty performance.
Injector Upgrades
Custom injectors help ensure optimal fuel-air mixture for peak performance after your turbo upgrade.
Airbox
Improve airflow, support better filtration, and help protect your engine from dust-related wear with our performance airbox upgrades—designed to complement performance tuning and high-demand driving conditions.
Custom Upgrade Packages
We create tailored performance solutions designed to support your specific power goals and driving requirements—customised for your vehicle and driving style.
Intake Pipe
Maximise airflow and engine breathing for impressive power gains and that signature diesel rumble you’ve been craving.
Airbox Upgrades
Enhance airflow and cooling to maximise engine performance and reliability.
Exhaust Systems
Improve power output and fuel efficiency while reducing exhaust backpressure.
Airbox Upgrades
While Factory systems support airflow up to about 270hp, replacing it with one of our larger, dustproof airbox assemblies allow for superior airflow to your engine, improve filtration, and offer better dust sealing.
Exhaust Systems
Our 3” and 4” exhaust upgrades are designed to reduce back-pressure and improve exhaust flow—helping your engine breathe more freely and support greater power potential when combined with tuning and other performance modifications.
Clutch Upgrades
Clutch upgrades for Australia’s tough conditions. Increased power and towing capacity.
Fan Kit
Maintain optimal engine temperature for better performance and longevity
Custom Upgrade Package
With experience across 70, 76, 78 & 79 Land Cruisers , we offer custom performance packages that are adjustable to cater to both DPF and pre-DPF VDJ70 models.
Hear Exchanger
Maintain optimal engine temperature for better performance and longevity
Custom Upgrade Packages
We create tailored performance solutions that can be precisely tuned to match your specific power goals and driving demands.
5W-30 diesel oil
With advanced formulation, our fully synthetic 5W-30 diesel engine oil may offer benefits beyond what’s typically expected from standard oils.
300 Series Sump
Provide your engine with more oil, better cooling, and extra reliability.
ECU REMAP & MULTI-MAPPING
Toyota 300 Series ECU REMAP
Watch a real-world towing test showcasing active converter lockup in manual mode, advanced closed-loop EGT protection, built-in flashing engine light alerts, and on-the-fly pedal sensitivity adjustment.
Multi-Mapping
See how simple it is to cycle through your 6 custom engine profiles—from a stealth immobilizer mode to hard-working tow maps—using either your factory cruise control stalk or a sleek physical dash dial.
The Software Revolution: Introducing Version 4 Multi-Mapping
The market's most advanced software: six custom maps, exclusive "Easy Pedal" throttle control, multi-layer temp protection, and built-in gear blipping inside your factory ECU.
packages explained
Package One
See how Just Autos Package 1 delivers a reliable 30% power bump and smooth driving using smart factory controls.
Package Two
Watch how Package 2 brings heavy-duty underbody protection and an aluminum airbox to your weekend adventures.
Package Three
Check out the ultimate 4-inch exhaust and snorkel upgrade that builds the ultimate nationwide touring machine.
Package One
Watch us wake up the sluggish factory V8 with a massive jump to 230HP and a heavy-duty 1600Nm clutch.
Package Two
See how an upgraded aluminum airbox and heavy-duty dual fan kit keep your V8 intake temperatures ice-cold under load.
Package Three
Look inside the ultimate build featuring a genuine Garrett JA300 turbo upgrade designed for relentless towing and off-road power.
Package One
Watch how our advanced 6-map ECU system gives you custom throttle response and built-in engine safety parameters.
Package Two
See what happens when you combine our precision multimapping with a custom high-flow airbox and a TIG-welded 4-inch stainless exhaust.
Package One
Discover how matching a custom engine tune with an advanced automatic transmission remap gives you a 4-fold increase in drivability.
Package Two
See how adding a premium Manta exhaust system to our custom software unlocks up to 80% more usable torque.
Package Three
Watch us clear up common factory V8 fueling issues and maximize engine output using high-flow performance injectors.
Package One - N80
Give your N80 Gen 3 the muscle it needs with a proven remap package built for the sand and the street.
Package One - N70
Wake up your reliable 3.0L D-4D with a dramatic torque upgrade that makes standard driving ancient history.
The Best in the West
Behind the Scenes: Just Autos Visits Hunter Mechanical in WA
Watch Matt from Just Autos touch down in Western Australia to tour our pristine workshops in Kenwick and Rockingham, collaborate on precision mainline hub dyno tuning, and advance our ongoing dealer training program.
Engineered for the West
Discover why we chose Just Autos as our exclusive tuning partner to deliver performance and reliability. Learn why premium heat management, product R&D, and stocked inventory are vital for heavy towing in WA.
GALLERY
Can’t Find Exactly What You’re Looking For?
If you are ready to plan your upgrade or have specific questions about a package, contact our shop today. For any additional information or nationwide network details, visit the main Just Autos website.