For drivers on the hunt for power and performance, the GDJ70 is the ideal Toyota – known (and loved) for its rugged reliability and formidable capabilities. Yet, even the most seasoned drivers recognise the untapped potential within their vehicles, looking to push boundaries and unlock newfound levels of performance.
One notable, yet relatively overlooked upgrade you can make to maximise power delivery in your GDJ 70 is the Airbox. In this blog, we take a close look at our latest offering – the GDJ 70 series Airbox, designed to give new meaning to your driving experience.

What Is An Airbox?
The airbox is a crucial component of the vehicle’s intake system. Its main role is to filter incoming air, ensuring that only clean and debris-free air reaches the combustion chamber. If left unfiltered, abrasive particles like sand, soil, dust and even small stones can coat vital engine components, such as pistons, cylinder walls, and valves, leading to reduced performance, premature wear and potentially costly damage.
Airbox Upgrades: What’s The Point?
Unfortunately, the GDJ 70’s stock airbox leaves much to be desired. Its small size, when compared to other vehicles has been known to restrict airflow, stifling the engine and limiting its efficiency. This has proven to be a pain point for many drivers, and why airbox upgrades are a must. Here’s a quick look at some of the benefits of upgrading your GDJ 70 airbox.
Better Airflow To The Engine
Upgrading the stock airbox in your GDJ 70 series is ideal for optimising the intake process, facilitating a greater volume of clean and filtered air to reach the engine. This influx of air is essential for fuelling combustion and allows the engine to operate more efficiently, resulting in enhanced performance and power delivery.
Minimise Risk of Engine Damage
Protecting your engine is crucial, especially when venturing into challenging terrains or harsh environments. An aftermarket airbox provides a crucial layer of protection for your GDJ 70 series engine offering an enhanced filtration system and improved design that ensures superior sealing. This prevents dust, debris, and other harmful contaminants from infiltrating the engine compartment.
Improved Fuel Economy
Did you know that you can experience better fuel economy too? By optimising the air-to-fuel ratio and ensuring efficient combustion, an advanced airbox upgrade helps you go further on every tank of fuel.

Looking At Just Auto’s GDJ 70 Airbox Upgrade
At Just Autos, we are passionate about performance and are always looking for ways to push the boundaries of what you can get out of your Toyota. That’s why we’ve dedicated ourselves to engineering innovative solutions that elevate your driving experience.
The existing airbox was far too small for the performance is needed to provide. That’s why we set out to create a solution that would address this. Designing an airbox for the GDJ 70 series presented quite a challenge. With clearance issues abound – from the bonnet to the guard, and everything in between – we faced a number of challenges.
With extensive research and a lot of back and forth, we designed and engineered an airbox that exceeded expectations. Upon installation, we saw a massive improvement in performance, achieving a higher boost pressure with less resistance.
One of the key features of this airbox is the he integration of a 79 series filter, commonly found in the VDJ and V8 series. This larger filter not only improves filtration but also enhances airflow, ideal for better engine performance.
For a closer look at our GDJ 70 airbox upgrade, be sure to check out our latest YouTube video. Experience firsthand the difference our upgrade can make in elevating your driving experience!
Looking For An Extra Boost? Consider Exhaust Upgrades Too!
While our airbox upgrade significantly enhances engine performance, pairing it with an exhaust upgrade can take your driving experience to the next level. The exhaust system is responsible for guiding exhaust gases away from the engine, improving engine breathing, and reducing back pressure.
While factory exhaust systems get the job done, performance exhaust systems, are specifically designed to outperform their factory counterparts.
- Better Horsepower: By optimising exhaust flow, performance exhaust systems help maximise horsepower output.
- Better Sound: Enjoy a more aggressive and satisfying exhaust note with a performance exhaust system, matching its newfound power.
- Improved Fuel Economy: Contrary to common belief, performance exhaust systems can also contribute to improved fuel economy. By reducing back pressure and optimising engine efficiency, these systems help your vehicle operate more efficiently, resulting in fewer trips to the pump.
Power & Performance Enhancements Made Easy
Designed to overcome challenges and exceed expectations, our airbox delivers tangible benefits that enhance every aspect of your driving experience. From improved engine efficiency to enhanced filtration and power delivery, our Airbox upgrade solution is set to unlock the full potential of your GDJ 70 series vehicle so you can confidently tackle whatever the road throws at you.
Upgrade your GDJ 70 series today and discover the difference that our airbox upgrade can make. Join us on the journey to redefine what’s possible behind the wheel of your Toyota. Because at Just Autos, we’re not just about upgrades – we’re about transforming your driving experience into something extraordinary!