If you’re a Toyota diesel owner in Australia, chances are your engine has been fitted with an exhaust gas recirculation (EGR) system. Disliked by performance enthusiasts and perhaps a little misunderstood, EGR systems are designed to reduce exhaust emissions by recirculating some of the exhaust gases back into the engine, where they can be reused for combustion.
While EGRs do improve a diesel’s environmental friendliness, they can also have a negative effect on performance if not properly maintained or functioning correctly. In this blog, we will explore the impact EGRs have on Toyota diesel models such as Land Cruiser, Prado, and Hilux in Australia and what happens when EGRs are not working properly. We will also discuss how Just Autos can help improve your Toyota’s performance – even if your beloved diesel has an EGR!
What is an Exhaust Gas Recirculation (EGR) System?
EGRs have been fitted to Toyota diesel engines since the late 1990s and were originally designed to reduce nitrous oxide (NOx) emissions, which are a major contributor to air pollution. EGR systems achieve this by recirculating some of the exhaust gases back into the engine, where they can be reused for combustion.
Unfortunately, EGRs can also cause unwanted side effects such as reduced power delivery, higher EGTs (Exhaust Gas Temperatures), increased black smoke output, and poor idle quality. All of these issues can become worse over time if EGRs are not regularly maintained or replaced when required.
Read More: How to Bolster Diesel Engine Performance & Maintain Emissions Compliance
Toyota Diesels and EGRs
Toyota diesel models have a history of issues with EGRs, particularly in Australia. Owners of these models have reported problems such as reduced power and fuel efficiency. The Land Cruiser, Prado, and Hilux are all popular models and have been known to have issues with their EGR systems.
Unfortunately, EGRs in Toyota diesel engines have a reputation for being unreliable and prone to failure. This is especially true if they are not regularly serviced or maintained when required. EGR valves also tend to clog up with oil and soot over time, which can further reduce engine performance.
Read More: What is DPF in a Diesel Engine?
The Impact of an EGR on Your Toyota Diesel
The impact of EGRs on Toyota diesel models can vary. Some owners may not experience any noticeable issues while others may suffer from reduced power and fuel efficiency. The EGR system works by recirculating a portion of the exhaust gas back to the engine, which can result in a reduction of oxygen available for combustion. This can lead to a decrease in power, as the engine is not able to generate as much power as it would if the EGR system was not present.
Poor fuel economy is another common issue caused by a malfunctioning EGR. The EGR system works by recirculating exhaust gas, which can cause the engine to run less efficiently. This can lead to an increase in fuel consumption, as the engine has to work harder to produce the same amount of power. Exhaust gas temperatures (EGTs) can also increase significantly, which can cause damage to other components in the engine such as the pistons and turbocharger.
EGRs are also known to produce more black smoke when they are not functioning correctly or have not been maintained. This is due to an inefficient air-fuel mixture being burned in the engine, resulting in a greater amount of unburned fuel exiting through the exhaust system.
Read More: Why You Need an Oil Catch Can with Your EGR System
Carbon Build Up in the EGR and Intake Manifold
Over time, the EGR system can become clogged with carbon build-up due to the oil and soot that is present in the exhaust gas. This can lead to several issues, such as poor performance, reduced fuel efficiency and even engine damage.
One of the most common issues caused by a clogged EGR system is a decrease in airflow to the engine. This can cause a loss in power and torque, which can be noticeable when driving. Another issue caused by a clogged EGR system is the blocking up of the intake manifold. The intake manifold is responsible for providing the engine with the air it needs to run, and when it becomes clogged, it can affect the performance of the engine.
Read More: Why You Should Clean Your Intake Manifold
Can You Prevent the EGR from Impacting Performance?
It is possible to prevent EGRs from impacting the performance of your Toyota diesel engine. Regular servicing and maintenance are essential, as this will ensure the EGR system is functioning correctly and not clogged up with soot or oil. It is also a good idea to have your mechanic inspect the EGR valve regularly for signs of wear or damage, as this can indicate when it needs to be replaced.
At Just Autos, we understand that EGRs can have a negative impact on your Toyota’s performance but there are ways you can combat this… And we have the solutions!
Maximise Your Power, Even With an EGR!
EGRs are a necessary evil when it comes to modern diesel engines. However, there are still ways that you can improve your Toyota’s performance even if it has an EGR system fitted. At Just Autos, we offer a range of performance tuning solutions that can help your vehicle reach its full potential – EGR or no EGR!
ECU Remapping
ECU (Engine Control Unit) remapping is a great way to increase your Toyota’s power and torque. At Just Autos, our experienced team of diesel performance technicians can tune the ECU in your Toyota diesel to optimise its performance and reduce EGTs and black smoke output. This is done by adjusting a range of parameters such as air-fuel ratio, injection timing, boost pressure and more.
By having your Toyota professionally tuned, you can enjoy improved throttle response, increased power delivery, better fuel economy and reduced EGTs – EGR or no EGR!
Read More: 3 Upgrades to Complement an ECU Tune
Performance Upgrades and Upgrade Packages
We also offer a range of performance upgrades and upgrade packages that can help you get the most out of your Toyota diesel engine. From transmission lock-up kits to air intakes, intercoolers and performance exhaust systems – we have all the performance parts you need to take your vehicle’s performance to the next level.
For those looking for more comprehensive solutions, we also offer tailored packages specific to your Toyota’s model and year. Our upgrade packages include our signature ECU remaps as well as other performance parts such as turbochargers, injectors and more.
So, if you are looking to maximise the power output of your Toyota diesel engine – EGR or no EGR – look no further than Just Autos! Get in touch with us today and find out how we can help you take your vehicle’s performance to the next level.
