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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.The larger the diameter, the more fuel an injector can deliver. As fuel injector size increases, there are some unwanted side effects. As an injector’s hole gets bigger, the minimum amount of fuel it can flow also gets larger.
Table of Contents
Do bigger injectors increase HP?
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.
What does putting bigger fuel injectors do?
The larger the diameter, the more fuel an injector can deliver. As fuel injector size increases, there are some unwanted side effects. As an injector’s hole gets bigger, the minimum amount of fuel it can flow also gets larger.
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Is it worth upgrading fuel injectors?
Changing fuel injectors is not a “plug-and-play” performance upgrade, such as installing a low restriction air filter. It’s something that requires knowledge about how the fuel delivery system works. In fact, upgrading fuel injectors may actually decrease the engine power if done incorrectly.
When should I upgrade my diesel injectors?
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.
How much HP does fuel injectors add?
The technical answer is yes; fuel injectors can add 10 extra horsepower at peak. However, for some car owners, that minimal difference does not offset the increased cost and complexity of switching to fuel injectors or upgrading the existing stock fuel injectors.
Do bigger injectors need a tune?
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).
Can I run bigger injectors than I need?
Can’t change injectors without changing the ECU. The stock ECU is set to one injector size. If you put in a different size the duty cycle for that injector will put in more or less fuel than the OEM set injector. A 1000cc will net you plenty of flow for the power goals.
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Bigger injectors = More Power = Better fuel economy? Explain.
Bigger injectors result in more power. To make more power you must burn more fuel. How does this result in LESS fuel being burned?
Will bigger injectors hurt mpg?
So, as long as the gas pedal can be kept under control with the new power from the larger injectors, there will not be much of a change in average miles per gallon, if any at all.
What size fuel injectors should I use?
…
Flow Rate Definition, Calculating Horsepower Range.
| Injector Flow Rate | Naturally Aspirated Engine | Engine w/ Power Adder |
|---|---|---|
| 19 lbs./hr. | 225-290 hp | 185-240 hp |
| 24 lbs./hr. | 280-360 hp | 240-300 hp |
| 30 lbs./hr. | 350-450 hp | 300-375 hp |
| 36 lbs./hr. | 425-540 hp | 350-450 hp |
Can I put bigger fuel injectors stock car?
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.
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Why are diesel injectors so big?
Bigger Injectors Are Quicker-Firing Injectors
Thanks to larger nozzles and the appropriate injector body work, the added fuel can be injected quicker. This means less timing advance (i.e. start of injection) to achieve your power goals, which translates into less stress placed on the engine’s rotating assembly.
How long do injectors last on a diesel?
The average lifespan of a diesel fuel injector is around 100,000 miles. A typical fuel injector has two basic parts: the nozzle and the injector body. If either of these components gets clogged or damaged, it will compromise the entire performance of the vehicle.
How often do injectors need to be replaced?
Some fuel injectors are rated to last one billion cycles or approximately the lifetime of the vehicle. But when you factor in the adverse conditions experienced in real-world driving coupled with a lack of proper maintenance, most fuel injectors might need to be replaced every 50,000 to 100,000 miles.
How much does it cost to replace diesel injectors?
On average, you can expect to pay between $350 and $850 to replace your fuel injectors. The range of costs depends on a number of factors. Smaller vehicles with fewer cylinders requiring less expensive parts will come in at the lower end of the spectrum.
Are bigger injectors better?
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.
How can I increase the power of my diesel engine?
- Use Diesel Fuel Additives. …
- Consider Diesel Tuners. …
- Install Performance Air Filters & Cold Air Intakes. …
- Upgrade the Exhaust System. …
- Use DPF, DEF, and EGR Delete Kits. …
- Upgrade your Diesel Fuel Injectors. …
- Install a Turbocharger. …
- Schedule Regular Diesel Engine Tune Ups.
How can I increase horsepower without a turbo?
There are many ways to increase power to your vehicle without adding a turbo or supercharger. You could change the exhaust manifold to a exhaust header and gain more power. You could change the intake to have air induction which will allow the air to be forced into the engine giving more horsepower.
Do I need a tune after new injectors?
Fuel injectors directly affect the fuel / air delivery of your vehicle. New fuel injectors do require a new or updated tune.
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How much power are 1000cc injectors good for?
The 1000cc Injectors can support 650+whp.
What are secondary fuel injectors?
Secondary injection in a diesel engine is defined as the introduction of additional fuel into the combustion chamber after the end of the main injection. It is usually caused by residual pressure waves in the high-pressure pipeline connecting the pump and injector.
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