Do bigger diesel injectors increase horsepower? (2023)

Will bigger injectors increase HP diesel?

When it comes to adding performance in modern diesel engines, it pays to go with big fuel injectors. Larger injector nozzles and higher fuel flow equals more horsepower potential while also making life easier for the engine.

Larger throttle body and injectors

A larger high-performance throttle body will deliver more horsepower. Depending on what type of engine you have, you can gain as much as 10-20 more horsepower and comparable torque.

Bigger is not always better

It's easy to fall into the trap of thinking that bigger fuel injectors equal more power, but unless your engine is set up to deal with the extra fuel, you'll be on a fast track to trouble. The excess fuel will flood the engine and it either won't run at all, or will be running too rich.

You can;t do a stock tune unless you can fool the ecu into thinking it is getting more or less air. If you throw in bigger injectors it will hold that injector open for the same amount of time as the smaller injectors and it will dump TONS of fuel in.

The main reason why you'd want a bigger injector is to increase the fuel flow rate. Bigger fuel injectors alone will not increase horsepower, but they can help if supporting mods are installed. More fuel doesn't necessarily translate to more power; it needs oxygen or air to produce power from that extra fuel.

By cleaning the build-up in your car's fuel system, a fuel injector flush provides many benefits to your vehicle, including: Improves your gas mileage, thus, saving you money. It helps to reduce emissions and reduces your carbon footprint. It can also increase the life of your vehicle.

How To Tell When You Need Bigger Injectors [HPA Q&A] - YouTube

In general, injectors need a tune. Otherwise, your ECU is trying to drive the new, bigger injectors using the duty cycle and dead times for the old, smaller injectors, which means too much gas potentially at the wrong time (i.e. - running rich and potentially missing).

The simple formula is horsepower times BSFC – or 500 horsepower x 0.5 = 250 lbs/hr of fuel. This is the amount of fuel we need to supply to the engine to achieve 500 hp. If we divide that volume by eight injectors (for a V8 engine), this comes to 31.25 lbs/hr necessary to feed the engine.

How do I increase the flow of my fuel injectors?

Fuel injectors directly affect the fuel / air delivery of your vehicle. New fuel injectors do require a new or updated tune.

In reality, if your car is modified to the point at which you need upgraded fuel injectors, you realistically need an upgraded fuel delivery system for optimum results. If done right, an upgraded fuel system will create an atmosphere where the engine can make more power, reliably and efficiently.

These new injectors can increase the horsepower of a diesel engine by as much as 100 hp. The benefits go beyond fuel efficiency. Changing the injector to a higher-performance system can be the basis for improving other parts of the truck, too.

Diesel fuel injectors generally have a shorter lifespan than their predecessors, meaning they need to be replaced more frequently for optimal performance. The life expectancy of a good quality diesel fuel injector is around 150,000 kilometres. They should be checked out by a professional at around this time.

During a fuel injection flush, a cleaning additive is added to the injectors to flush the system and remove any build-up of fuel, wax, or dirt that may be clogging the injectors and not getting enough fuel onto the engine.

As a general rule of thumb, if it is below zero degrees Fahrenheit, you should allow your engine up to seven minutes to warm up. If the temperature is between zero and fifty degrees, the warm-up period should be three to five minutes. Over fifty degrees will only require one or two minutes to warm up.

If your exhaust smoke is white, this is a reason for concern in a diesel engine vehicle. White exhaust smoke means fuel is not burning properly. This could mean: The engine is too cold. Faulty injection system.

A diesel engine needs backpressure and if you open the exhaust up too much it will hurt my engine.

Is tuning a diesel worth it?

Diesel tuning will improve the power, torque and speed, mainly improving the performance of your diesel vehicle. Generally, it is used for more modern or turbocharged vehicles. Tuning new vehicles is also much easier as they have more adjustment points and reduce the time it takes to change the ECU.

Fuel injectors directly affect the air/fuel ratio for the engine and new fuel injectors do require a new or updated tune.

Fuel Injectors are sized by their flow rate. Flow rate is a measurement of how much fuel can be delivered over time. It is listed in pounds per hour (lbs./hr.) or cubic centimeters per minute (cc/min.). The right size injector can supply enough fuel under full load conditions at an 80% duty cycle.

INJECTOR MATH-HOW TO CHOOSE THE RIGHT SIZE - YouTube

Without the right fuel injector, the car engine may not start or it may overflow, resulting in wastage of gas. In most of the cars, the stock fuel injector is sufficient. However, if you want to make changes to your car, you have to upgrade the fuel injector accordingly to realize the turbo power.

Required fuel pressure can vary depending on your vehicle's engine and fuel system. Carbureted engines may require as little as 28 kPa (4 PSI), while modern multipoint fuel injected high-performance engines can require as much as 414 kPa (60 PSI).

A: Yes, these will be good up to about 450 WHP.

But unlike fuel-injected gas engines that inject fuel at 10-60 psi, diesel fuel-injection systems run in the 10,000-30,000-psi range.

Injector dead time is exactly what it says. It is the amount of time between the point where the ECU told the injector to open and then told it to close, where the injector was not actually open or was not flowing at its peak flow. This occurs because the injector pintle does not move immediately.

Can you modify fuel injectors?

FIT MODIFICATION

Many injectors both OEM and aftermarket can be adapted to fit other vehicles. Fit modification may involve the removal of material from the injector or sealing surface, or could require the addition of spacers, cushions, extenders, and/or seal retainers in order to fit properly*.

Sinister Diesel is a national diesel truck parts manufacturer, headquartered in Roseville, CA. We are owned and operated by diesel enthusiasts who aim to bring high-performance parts and a little bit of a rebel lifestyle to our customers.

Description. 6.0L Ford Powerstroke Injector Set: 175cc with a 30 percent over nozzle. Approximately 90 RWHP increase over stock. Largest size for stock turbo, not recommended for heavy towing on stock turbo.

Abstract: In the common rail system, fuel is distributed to the injectors from a high pressure accumulator, called the rail. The rail is fed by a high pressure fuel pump. The pressure in the rail, as well as the start and end of the signal that activates the injector for each cylinder are electronically controlled.

A diesel fuel injection system directly injects diesel fuel into the cylinder. In a gas engine, a port injection or a carburetor is used to inject fuel prior to the intake stroke (outside the cylinder) where the fuel mixes with air before it enters the cylinder.

The 7.3L Powerstroke engine, made by International Navistar, was introduced to Ford Heavy Duty trucks. The 7.3L Powerstroke Diesel engine provided significantly better performance specifications than its 6.9L IDI and 7.3L predecessors.

Yes, you can legally have your emission system removed from your vehicle, but it requires recertification by the manufacturer and a new emission label and certification issued. You can't just sign a piece of paper and proclaim you've re-certified your engine.

The 6.0L Power Stroke, was used in Ford Super Duty trucks until the 2007 model year but lasted until 2009 in the Ford Econoline vans (model year 2010) and in the Ford Excursion SUVs until after the 2005 models when Ford discontinued Excursion production.

The main advantages of the common rail direct fuel injection can be summarized in reduction of exhaust and noise emissions, better fuel efficiency and improved overall engine performance.

What pressure do diesel injectors work at?

In many cases, the injector is mounted just like a spark plug would be in a gas engine. But unlike fuel-injected gas engines that inject fuel at 10-60 psi, diesel fuel-injection systems run in the 10,000-30,000-psi range.

Common rail direct fuel injection is a direct fuel injection system for petrol and diesel engines. On diesel engines, it features a high-pressure (2,000 BAR – 29,000 PSI) fuel rail feeding individual solenoid valves, as opposed to a low-pressure fuel pump feeding unit injectors or pump nozzles.

The American Boat & Yacht Council (ABYC) recommends the Type B1 fuel hose for diesel-based applications. The Type A1 hose is the best option for gasoline supply. This hose is less permeable, highly durable, heat resistant and does not collapse under high pressure or vacuum.

Your vehicle can be equipped with one of the three most common injection systems on the market. GDI (Direct injection), SDI (Semi-direct injection) or TBI (Throttle body injection).