At Just Autos, we offer premium-grade 409 stainless steel exhaust systems tailored for a range of Toyota diesel vehicles—including the Land Cruiser series, Hilux, and Land Cruiser Prado.
Available in configurations from 2.5” to 4”, our systems can be fitted with high-flow catalytic converters and your choice of high-flow mufflers or smaller resonators, depending on the desired sound and application.
These systems are engineered with increased diameter and improved flow characteristics, designed to help support improved engine breathing. This can lead to better engine responsiveness, power delivery, and a more aggressive exhaust note.
Whether you’re looking for greater durability or improved performance characteristics, our Toyota diesel exhaust upgrades are designed to work in harmony with your existing or upgraded tuning setup.
Our stainless steel performance exhaust systems are designed to help improve exhaust gas flow by reducing backpressure and increasing overall durability compared to factory-fitted systems. With options that include high-flow mufflers and mandrel-bent pipework, these upgrades support improved breathing for your engine and can enhance your driving experience through a more assertive exhaust note.
Many customers also report a more responsive feel during acceleration and towing. These systems are available for various Toyota diesel models, including the LandCruiser, Hilux, and Prado.
While fuel efficiency results can vary, improved exhaust flow may support more efficient combustion in certain driving conditions. Actual results depend on vehicle setup, driving style, and road conditions.
Just Autos are your local Toyota diesel performance experts. We offer a range of exhaust upgrades and options, including custom exhausts and tail pipes. Our exhaust systems are made from high-grade stainless steel and come in a range of configurations to suit your needs.
Whether you’re looking to improve performance, increase airflow and efficiency, or create a more aggressive exhaust note, we’ve got the exhaust upgrade you need.
Our expertise can help you make the right choice when upgrading parts or the performance of your Toyota vehicle, and our goal is to make your performance dreams come true!
As Australia’s premier common rail turbo diesel ECU remapping experts, vehicle owners across Queensland, Interstate and even Internationally bring their high-performance diesel vehicles exclusively to our workshop.
We fit it aftermarket to improve the flow of the gasses expelled from the turbocharger assembly when tuning. Running higher boost pressures and increased fuelling can increase temperatures inside the exhaust manifold and turbocharger assembly. Having a larger free-flowing system of exhaust will help in aiding the removal of this extra heat when tuning a diesel vehicle.
When tuning a wide majority of vehicles an aftermarket exhaust is required to tune the vehicle efficiently, the factory system of exhaust has restrictive mufflers and bends which can decrease the exhaust flow and restrict the amount of torque and power we can achieve efficiently.
Most common rail vehicles require to be tuned once having an aftermarket exhaust fitted to fully utilise the gains that can be achieved, in some cases when fitting an aftermarket exhaust you can have issues with sending your vehicle into limp mode caused by a freeing flowing exhaust which causes the turbo to spike above your factory ECU’s desired boost limit.
Depending on the model of vehicle most exhaust upgrades alone can see up to a 5% increase in power and torque.
Many factors come into play when it comes to making a great system of exhaust, high flow mufflers and mandrel bends will help with exhaust flow, 409 stainless exhaust will help with overcoming rust holes developing in your exhaust system and is a very pliable metal that accommodates the extreme change in temperature seen in it. This prevents cracking.
Most systems of exhaust will discolour over time, some will even develop surface rust. We recommend washing the full under carriage of your vehicle down regularly to prevent surface rust developing and getting the best life out of your exhaust system.
An exhaust alone might achieve a small % gain in torque and power, but when coupled with a Just Autos custom ECU remap, you can expect a sizable % gain over factory figures.
The 79 series Landcruiser exhaust can come in many sizes but 3” or 4” are the most popular systems, saying that 3” and 4” will still see the same results for power when using a factory turbo but will produce vastly different sounds when under load. When fitting an upgraded turbo from G Turbo a 4” exhaust is required to be port matched with the rear exhaust outlet of most G turbos.
Stainless steel exhausts will provide a longer lasting exhaust system while also preventing the system from rusting out over a long period of time, we recommend fitting a stainless exhaust system when touring to help prevent failure while out and about
Most diesel vehicles require mufflers to comply with ADR standards.
Cat back exhaust are quite cheap because they leave the restrictive factory catalytic converter and dump pipe in place but replace the rest of the system, we recommend replacing the exhaust from the turbo back to achieve a more efficient exhaust flow.
Stainless exhaust can discolour and develop surface rust over time, we recommend cleaning down your exhaust regularly to prevent this from happening however if this does occur a good quality metal polish and stainless-steel wool will clean this right up.
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