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Toyota 300 Series Land Cruiser

Performance Upgrades That Redefine Your Drive

  • 300 Series
  • FJA 300
  • FJA 300
  • LC 300
  • 2021 onwards

Unlock the Full Power of Your 300 Series

300 Series Performance Upgrades & Custom Tuning

Toyota’s new flagship model comes from a long line of Land Cruisers. Like their older VDJ70 and 200 Series siblings, the 300 Series is built tough, packed with capability, but with untapped performance waiting to be unlocked.

And when it comes to enhancing the performance of your Toyota Land Cruiser, experience matters.

See your 300 series’ potential
2-mins. Commitment free. Boost power, efficiency & reliability

HARDWARE UPGRADES

300 Series hardware performance upgrades

Upgrade your Toyota with cutting-edge hardware designed to maximise durability, power, and efficiency for every journey.
BUILD A 300 SERIES PACKAGE

Remap & Multimapping

Unlock your vehicle’s hidden potential with custom engine tuning that delivers optimal power and efficiency at the touch of a button.

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.

Heat 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.

SOFTWARE UPGRADES

Custom 300 Series ECU Remapping & Dyno Tuning

We specialise in custom ECU remaps & dyno-tested upgrades, fine-tuned with Just Autos products for peak performance. Our in-house master tuners optimise power, throttle response, and drivability—tailored to your needs.

300 series

HOW IT WORKS

Diagnostics & Assessment

Analyse air-fuel ratio, boost pressure, RPM & more.

Baseline Dyno Run

Simulate road conditions to measure pre-tune performance.

Custom Tuning & Adjustments

Modify ECU and hardware for peak performance.

Final Dyno Run & Comparison

Measure post-tune gains and optimise results.

ECU Remapping & TUNING FOR 300 series landcruiser

ECU remapping involves reprogramming your vehicle’s Engine Control Unit (ECU) to optimise engine performance. This process can help increase power and torque output and is designed to enhance throttle response and drivability.

It’s a cost-effective way to recalibrate your engine’s performance characteristics—without the need for hardware modifications—making it a popular upgrade for drivers looking to improve engine responsiveness and overall feel.

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MuLTI-MAPPING 300 series landcruiser

Just Autos offers advanced ECU multi-mapping services suitable for Toyota diesel vehicles, enabling drivers to switch between multiple engine performance maps tailored to various driving conditions. This technology allows for quick adjustments to the ECU’s parameters without manual reprogramming, enhancing engine efficiency across different terrains.

 

A custom-installed switch within the vehicle’s interior facilitates seamless transitions between maps, providing optimal performance whether you’re towing, off-roading, or seeking maximum power output.

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FIND YOUR PERFECT 300 SERIES UPGRADES NOW

Whether you’re navigating rough terrain, towing heavy loads, or just looking for a more responsive driving experience, our Toyota-specific tuning and upgrades are designed to enhance key aspects of your vehicle’s performance.

At Just Autos, we don’t just tune vehicles—we refine them with precision, drawing on years of diesel expertise and real-world testing.

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OUR 300 Series Testimonials

Peninsula Landscape Architects

Installed the Stage 3 Performance Package on our Land Cruiser 300 (LC300). It has transformed the vehicle – more power, torque and responsiveness. The car now pulls like a train and feels almost ready to fly.

John Good

The team was so professional from start to finish making sure I got exactly what I was after for my 300 series. The finished product was mind blowing.

Lawrence Farrar

I had my 300 in for package three. I am blown away as it is a totally new car, the tow map is great. I just pulled my van, which is 3.5 ton 10 hr home; it is unreal at towing now. I would recommend this package to anyone who wants the most from their 300.

Steve Pickering

Very pleased with the customer service, quality workmanship and end results from Just Autos for my 300 series cruiser.

Jamie Kunst

Trusted the Just Autos team to do a tune and exhaust on my new 300 series and could not be happier. Easy to deal with and very knowledgeable. Thanks heaps, loving the additional power and enjoy the 300.

Jeff Kealy

Excellent products and service. If you have a 300 series and it gets hot towing, Just Autos have the fix. Great intercooler upgrade and professional results. Highly recommend.

Diesel Performance
Experts Who Care

At Just Autos, diesel performance isn’t just what we do—it’s what we know, and what we care about. With years of hands-on experience specialising in Toyota diesel platforms, our team combines expert technical knowledge with a customer-first approach that sets us apart. Every vehicle we tune is treated like our own, with tailored solutions, transparent advice, and a commitment to reliability and safety. From your first enquiry through to workshop handover, we prioritise your goals—whether that’s improving towing performance, enhancing drivability, or getting more from your engine setup. We’re not here for shortcuts—we’re here for results that last.
See your vehicle’s potential
2-mins. Commitment free. Boost power, efficiency & reliability
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Be the first to know about new upgrades, limited-time offers, and diesel performance insights.

Diesel Performance Upgrade Specialists. Unlock the power of your vehicle today.

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