How Do Diesel Performance Chips Work?

Have you ever been perplexed by the plethora of technical gadgets claiming to improve the performance of your modern Diesel engine? – Don’t worry, you’re not alone.

This post will take the uncertainty out of selecting a system that runs well, isn’t too expensive, and, most importantly, won’t jeopardize your engine’s longevity.

Why upgrade your vehicles diesel performance?

There are several reasons why you and other Australian 4WD owners are converting to performance items, but it all boils down to two factors:

1. Modern diesel engines simply aren’t up to the task.

The ordinary engine package just isn’t up to the task. You feel as if you’re barely keeping up with your sense of smell.

2. You’re towing and require additional power

We’ve all been there: you’ve added another pair of wheels to tow behind you, and the extra load capacity is sapping the performance of your car. Then there’s overtaking and climbing slopes… well, forget about that.

So, what’s changed?

Mechanical injector pumps were used in earlier diesel 4WDs. Bigger turbos, bigger injectors, and heavily tuned injector pumps were among the performance modifications. The purpose of these changes was to jam more of the good stuff into the chamber, resulting in a greater explosion.

If you’re ready to invest a small amount, these performance upgrades are great. But keep in mind that, on top of that modest fortune, you’ll almost certainly need to upgrade the remainder of the engine’s combustion system to get it up to speed.

Technological innovation has resulted in performance improvements in today’s Diesel 4WD market. As a result, today’s updates are more difficult. The engine’s combustion is now managed by computer control units known as ECUs, thanks to the development of the common rail diesel system.

This means that simply adding parts to your car to push it to new limits is no longer sufficient. To boost the performance of today’s 444 diesel engine, you’ll need to get technical — it all comes down to the computer control unit.

Diesel performance chips

A diesel chip is a simple device that connects to the common rail pressure circuit and increases the fuel pressure inside it. More fuel is pumped through the injectors and into the cylinder when the pressure is higher.

The engine will have moderate gains of 10-20 percent more with the additional fuel. However, these benefits are not always inexpensive.

These systems have a history of being dangerous. Higher-pressure injectors generate greater heat inside the cylinder, which can burn holes in the pistons. Simply said, if you bought it for $200 on eBay, you may expect to pay thousands of dollars more later when your engine fails.

Do diesel performance chips really work?

Performance chips may boost your engine’s power, but they also raise the chance of a power failure. Manufacturers’ advertised gains frequently do not match real-world performance. An existing warranty on your car would be void if you installed a performance chip.

What does a diesel performance chip do?

Diesel performance chips are electrical gadgets made by “third-party” manufacturers that alter the equipment’s original programming in order to boost an engine’s power output.

Do the performance chips really work?

Vehicles released in Europe and North America as early as the 1970s already had an onboard computer that controlled essential engine functions such as gearing and ignition timing, as well as air-fuel ratios. Despite the fact that these built-in computers were in charge of the car’s general health, they were adjusted for vehicle stability rather than peak performance. It wasn’t until 1996 that performance chips (designed to overcome factory-imposed limits) became widely used.

Because this approach is still prevalent, many of us are left wondering, “Do performance chips work?” Yes, it is correct. Torque output and overall vehicle performance are significantly improved with performance chips. However, getting the most out of your chip is based on a number of factors, including obtaining a chip that is compatible with your car.

The performance of a chip is influenced by factors like as the vehicle’s type and model, high-quality fuel and lubrication, and the presence (or absence) of aftermarket performance items. Understanding how these factors affect the efficiency of a performance chip is crucial in determining whether or not it is required to install one in your car.

Do performance chips hurt your engine?

No. Because it boosts the horsepower and torque output, a performance chip does not harm your engine or transmission. This power is mostly generated by altering your air/fuel ratio and ignition timing to optimal levels in a safe manner. In reality, a performance chip can shield your engine from harm.

Upgrade the Air Intake

Improving the airflow to the engine is a surefire technique to boost a diesel vehicle’s performance. More air will reach the engine using an enhanced air flow kit, resulting in increased power.

In addition, the new airflow kit will pull air from outside the engine compartment, bringing colder air in. The amount of power produced by the engine will rise because cooler air is denser and holds more oxygen.

An enhanced air flow system can boost horsepower while also improving fuel economy.

Change or Reprogram the ECM

Engine performance is controlled by the Engine Control Module (ECM), which alters critical engine parameters such as the air-fuel mixture and maximum RPM.

You may easily change these settings by reprogramming or changing the ECM. This will allow the engine to create more horsepower and torque, which will increase performance.

ECM upgrades not only increase power, but they also help to increase diesel efficiency.

Using New Fuel Injectors

The next step is to upgrade the fuel injectors if you’ve improved the air flow to the engine and set up the ECM to produce additional power.

More fuel will reach the engine thanks to new fuel injectors, resulting in increased horsepower. Individual injector nozzles are found on most performance fuel injectors, which provide higher pressure and better atomize the fuel.


Adding extra power to diesel engines using a performance turbocharger is a wonderful way to do it.

The turbo operates by pressurizing the air intake and forcing additional air into the engine. It is possible to generate more power while improving engine efficiency by using a turbo.

In comparison to a non-turbo engine, a stock turbo boosts air flow three to four times. A performance turbo, on the other hand, can enhance airflow by five to ten times over a non-turbo engine, resulting in a bigger horsepower boost.

Performance Exhaust

You’ll need to update your exhaust system if you want to increase the engine horsepower.

Unlike factory exhaust systems, which are designed to reduce noise, a performance exhaust system will have a wider diameter and fewer bends, allowing for more exhaust flow.

A broader, straighter exhaust system will help reduce exhaust gas temperature and boost the engine’s horsepower and torque.

Are diesel tuners worth it?

Will a Tuner Help Me Save Money on Gas? Yes, a tuner should theoretically improve your truck’s fuel economy by enhancing engine efficiency. The highest fuel economy advantages are often seen with tunes ranging from 65 to 90 additional horsepower. This is not the case all of the time, however.

How much does it cost to chip a diesel?

While the new ECU chip may be installed by an ordinary DIY mechanic, there are some potential issues. Failure to properly install the chip might cause serious damage to the engine, resulting in costly repairs down the road. Depending on the sort of automobile you have, professional installation can cost anywhere from $400 to $700.

If you think you can install the chip yourself, a new chip can cost anywhere from $300 to $600, depending on the vehicle you’re tuning.

Are tuning chips detectable?

Even if the box has been uninstalled, the dealers can now detect whether one has been placed earlier. They don’t appear to be the secret tuning device that will keep your warranty valid any longer.

What does a Stage 3 performance chip do?

Increase power and torque in the low end of the spectrum. Everyone will be thrown off the line if you accelerate quickly. There are no special tools or skills necessary for installation. Depending on the factory engine performance and other modifications you may have, you will get 20-40 extra horsepower and significantly enhance acceleration by up to 20%. It is not necessary to remove or disassemble your ECU. There will be no soldering. This stage 3 upgrade kit is meant to deceive the computer into producing more horsepower, torque, and acceleration. You’ll like a revitalized engine that provides excellent acceleration without the customary flat patches. There are detailed instructions given.