Can You Supercharge A Turbo Diesel?

We’ve reached a point in diesel performance where we can confidently state that supercharged diesels can provide significant power. Driveability, on the other hand, is where they really shine, especially in high-horsepower applications where turbos can handle massive volumes of fuel and rpm. The lack of commercially accessible kits is probably the only reason superchargers haven’t caught on with diesels yet, and we hope that will change in the future.

Why don’t they supercharge diesels?

Why isn’t a diesel engine supercharged? Superchargers are rarely utilized in diesel engines since the compression ratio is normally very high, resulting in more power down low and less turbo lag.

Can you put a turbo and supercharger together?

Yes. Both can be used. Superchargers and turbochargers have slightly distinct concepts. When simply supercharging is used (without a turbocharger), it uses about 3-5 percent of the engine’s power. However, when supercharging is used, the engine’s power and other performance parameters such as volumetric efficiency rise.

Can you twin charge a diesel?

By combining the benefits of turbochargers and superchargers, a system may be developed that delivers quick throttle response and higher boost in low-load, low-engine-speed scenarios while still fulfilling the airflow requirement of an engine under heavy load. Twincharging is the process of using both a supercharger and a turbocharger. The supercharger outlet feeds into the turbocharger compressor inlet in a standard twincharged diesel. As a result, air is pulled in by the supercharger, compressed, and then compressed even further by the turbocharger. The supercharger assures quick throttle response and positive boost off idle, while the turbocharger boosts maximum boost and satisfies the engine’s increased airflow requirements as the engine speed rises.

Because the supercharger reaches maximum pressure quickly off idle and compensates for turbocharger lag times, instant throttle response is possible at any engine speed.

Due to a turbocharger’s improved flow rate, airflow is maintained at high engine speeds and loads.

When opposed to turbocharging alone, a supercharger consumes engine power to function, resulting in a larger parasitic loss.

While compound turbochargers are better suited for all-out performance (sled pulling, drag racing engines), supercharged and turbocharged diesels are an intriguing choice for street-able trucks and tow rigs.

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 engines 2 stroke?

Combustion of diesel fuel The diesel engine is a piston-cylinder device with intermittent combustion. It has a two-stroke or four-stroke cycle (see diagram); but, unlike a gasoline engine with spark ignition, the diesel engine only injects air into the combustion chamber on the intake stroke.

Will a supercharger hurt my engine?

Turbochargers and superchargers are not harmful to your engine. Since the beginning of time, they have been utilized on engines. They have the added benefit of improving engine performance. Turbochargers can improve fuel economy, but they have more moving components, which may necessitate additional maintenance. Although superchargers boost performance, they do not save petrol.

How much HP does turbo add?

Adding a supercharger or turbocharger to your vehicle will result in immediate horsepower gains. While this is one of the more expensive alternatives on the list, the power that each of these add-ons provides will astound you. Both of these components, often known as forced induction parts, force air into your car’s engine, increasing horsepower and torque.

A turbocharger works in conjunction with the exhaust system to produce improvements of 70-150 horsepower. A supercharger is a device that adds 50-100 horsepower to an engine by connecting directly to the intake manifold.

Is it cheaper to turbo or supercharger?

The cost of turbochargers and superchargers is comparable. However, this does not imply that they are inexpensive.

Superchargers are generally more expensive. They can be specialized according to a car manufacturer’s specific make and model, making replacements and repairs difficult to come by. Because superchargers are not mass-produced, the current market value is influenced by supply and demand. Because most new cars don’t come with a supercharger, superchargers are frequently custom-made for each engine or model.

Furthermore, the cost of a supercharger is increased by its very nature. After all, this is a machine capable of spinning at an additional 65,000 RPMs. That extra power comes at a cost.

Mechanical superchargers might be on their way out. The supercharger will be replaced in the future, according to Chris Cowlands, director of Fiat Chrysler Automobiles’ advanced engineering. “I believe the electric supercharger will take the place of the mechanically driven one.”

An electric supercharger will be more efficient and environmentally friendly, but the cost is unknown.

Turbochargers start at roughly $400 and go up from there, depending on the manufacturer and model. However, because turbochargers generate heat and are not connected to the engine, some components in non-turbo cars must be installed to compensate for the increased force. This could include the intake piping, boost controller, intercooler, downpipe, knock sensor, and high capacity fuel pump and lines, among other things.

Don’t let the extra parts frighten you away from turbochargers. Unlike superchargers, turbochargers are now standard equipment in many current cars. Turbocharged automobiles are significantly more prevalent in the United States, owing to the fact that they are fueled by previously untapped exhaust gases.