How to Lower Egt on a Diesel

Lowering Exhaust Gas Temperature (EGT) on a diesel engine can be beneficial for a variety of reasons, such as reducing the risk of engine damage, improving performance, and increasing fuel efficiency. Here are several methods to help lower EGT on a diesel engine:

  1. Increase airflow: Improved airflow helps to lower EGT. Consider the following steps:
    • Ensure the air filter is clean and not clogged, as a dirty filter restricts airflow.
    • Upgrade to a high-flow air intake system to increase the volume of air entering the engine.
    • Install a larger intercooler to cool down the compressed air before it enters the engine.
  2. Upgrade the exhaust system: A better exhaust system can help reduce EGT by improving the flow of exhaust gases. Consider these options:
    • Install a larger-diameter, low-restriction exhaust system to allow gases to exit more efficiently.
    • Use a performance-oriented exhaust manifold or headers to improve exhaust flow.
    • Consider a high-flow catalytic converter or a straight-through muffler design for reduced back pressure.
  3. Use a water-methanol injection system: Water-methanol injection helps to lower EGT by injecting a mixture of water and methanol into the intake air. This method cools the combustion process and reduces EGT. It’s important to use a proper water-methanol injection kit designed for diesel engines.
  4. Optimize fuel delivery and injection timing:
    • Ensure your fuel injectors are clean and functioning properly. Dirty or faulty injectors can lead to incomplete combustion, increasing EGT.
    • Consider using a performance tuner or engine management system to optimize fuel delivery and injection timing. This can help achieve a more efficient combustion process and lower EGT.
  5. Avoid excessive engine load:
    • Heavy towing, aggressive acceleration, and driving at high speeds for extended periods can significantly increase EGT. Try to minimize excessive loads on the engine, especially when the engine is already running hot.
  6. Upgrade the cooling system:
    • Ensure that your engine’s cooling system is functioning optimally. Maintain proper coolant levels and ensure the radiator and cooling fan are in good condition.
    • Consider installing an aftermarket performance radiator or a larger cooling fan to enhance the cooling capacity.

Remember that modifying your engine may have implications on warranty coverage or local emissions regulations. It’s advisable to consult with a qualified mechanic or performance specialist who can provide tailored recommendations for your specific diesel engine and intended use.

How to Lower Egt 7.3 Powerstroke

If you are looking for ways to lower your EGT on your 7.3 Powerstroke, there are a few things that you can do.

  • First, make sure that you are using the correct grade of oil.
  • Second, run a higher quality fuel filter.
  • And finally, use a quality performance chip or tuner.

All of these things will help to keep your EGT in check and help your truck run better overall.

What is a Safe Egt for a Diesel?

A safe EGT for a diesel is typically around 1,200 degrees Fahrenheit. However, some diesels can run hotter than this without any issues. It is important to check your owner’s manual or with the manufacturer to find out what the recommended EGT range is for your specific vehicle.

What is Normal Egt Temp?

When it comes to EGTs, or exhaust gas temperatures, there is no such thing as a “normal” temp. Every engine is different, and therefore will run at different EGTs under different conditions. That being said, there are some general guidelines that can be followed in order to ensure that your engine is running at its best.

Generally speaking, most engines will operate within a safe range of 1200-1600 degrees Fahrenheit. However, it’s important to keep in mind that this range will vary depending on the type of engine you have, as well as the specific application it’s being used for. For example, racing engines typically run much hotter than street engines, often reaching temperatures upwards of 1800 degrees Fahrenheit or higher.

It’s also important to note that EGTs can fluctuate quite a bit during normal operation. For instance, they will usually spike when you first start up your engine after it’s been sitting for awhile (this is due to the fact that cold air is denser than hot air and therefore requires more energy to move through the exhaust system). Additionally, EGTs will usually rise when you rev up your engine or put it under load (such as when accelerating or climbing a hill).

So what does all this mean? Basically, there is no one “normal” EGT temp – every engine is different and will operate within its own unique range. However, as long as you stay within the general guidelines mentioned above, chances are good that your engine is running just fine.

Where is the Egt Sensor Located?

The EGT sensor is located in the exhaust pipe, before the catalytic converter. It measures the temperature of the exhaust gases leaving the engine.


Lowering exhaust gas temperatures (EGT) on a diesel engine requires a combination of strategies. Improving airflow, controlling fuel injection, upgrading the cooling system, proper engine tuning, and regular maintenance are key factors in reducing EGT. By implementing these measures, diesel engine performance can be optimized while minimizing heat buildup and ensuring long-term reliability.