Do 4 Hole Injectors Make A Difference?

by | Last updated on January 24, 2024

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Do 4 hole injectors make a difference? The traditional argument is that

4-hole injectors are better because they atomize the fuel with the air better

. The images and videos on youtube are certainly proof that they do spray the fuel into a mist, unlike the 1-hole which sprays a very steady stream.

Will bigger injectors make more power?

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.

Do fuel injectors add more hp?

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.

Is it worth upgrading fuel injectors?

Are larger 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.

Can I run bigger injectors without 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).

How do I choose injectors size?

  1. Step 1: Determine Horsepower. …
  2. Step 2: Determine Approximate BSFC (Brake-Specific Fuel Consumption) …
  3. Engine Type BSFC Using Gasoline. …
  4. Step 3: Determine Your Safe Duty Cycle. …
  5. Step 4: Calculate Your Optimum Injector Size. …
  6. Step 5: Fine-Tune the Flow.

Will bigger injectors hurt mpg?

In the end,

do not upgrade to larger injectors in an attempt to get better fuel mileage

, as new stock sized injectors will do the job if your current injectors are worn out. But at the same time, if you are looking for more power, do not be afraid to go to a larger injector because of losing fuel economy.

Can I put bigger injectors on stock engine?


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.

How do I tune my engine to get more power?

When should you get bigger injectors?

What are the best fuel injectors?

  • #TOP 1. Ford Racing M-9593-LU47 47 Lb/Hr Fuel Injector Set of 8. CLICK FOR PRICE Read Review. Ford Racing M-9593-LU47 47 Lb/Hr Fuel Injector Set of 8. …
  • #TOP 2. AEM 25-100BK Black High Volume Fuel Rail. CLICK FOR PRICE Read Review. …
  • #TOP 3. MSD 2922 Atomic EFI Fuel Injector. CLICK FOR PRICE Read Review.

What will happen if I put smaller injectors in my car?

If you change to a smaller size injector then

the injector will need to “open” more to deliver the fuel required to achieve any given RPM

. Since the throttle control at the steering station is just an “RPM request” to the governor, you would put in the same position as you always did for a given RPM.

What do you need to upgrade injectors?

What do bigger injectors do on a diesel?

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.

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.

What size injectors do I need for 500hp?

Injector Flow Rate Naturally Aspirated Engine Engine w/ Power Adder 30 lbs./hr. 350-450 hp 300-375 hp 36 lbs./hr. 425-540 hp 350-450 hp
42 lbs./hr

. 500-625 hp 410-525 hp
46 lbs./hr. 540-690 hp 450-575 hp

What pound injectors do I need?

Which is better high or low impedance injectors?

How do you flush fuel injectors?

Do you need a tune for fuel injectors?

Fuel injectors directly affect the fuel / air delivery of your vehicle.

New fuel injectors do require a new or updated tune

.

How can I add 100 horsepower to my car?

  1. Clean House to Increase Horsepower. …
  2. Perform a Tune-Up on the Engine. …
  3. Install a Turbo Kit or Supercharger. …
  4. Install a Cold-Air Intake. …
  5. Install an Aftermarket Exhaust System. …
  6. Buy an Engine Tuner.

What makes an engine rev faster?


Lower piston speeds means less stress on the connecting rods and crankshaft as well as acceptable flame propagation speeds

, allowing the engine to rev even higher. Also, by having a wider bore, you can have larger intake and exhaust valves, leading to better airflow at high RPM.

How do you increase engine redline?

Are all fuel injectors the same?


There are two distinct types of fuel injectors

: high impedance units, and low impedance units. A high-impedance injector (aka saturated) uses a high resistance value of around 12 ohms across its coil, but runs at low current levels to keep the circuitry cool.

Which type of fuel injection do most new vehicles use?

As technology advances, direct injection engines may become easier to manufacture, but, for now,

sequential multi-port injection

remains the most common fuel injection system in cars today. It provides the right mix of efficiency and affordability for most applications.

How long does a fuel injector last?

In general, they’re expected to last a pretty long time. Both Bosch and Delphi, two major manufacturers of automotive components, say their fuel injectors have a life expectancy of

1 billion cycles

. Essentially, that means that the fuel injectors should last as long as the car does.

What happens if you put bigger injectors on stock engine?

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

.

What do larger fuel injectors do?

What do bigger injectors do on a diesel?

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 much HP can 24lb injectors support?

Injector Flow Rate Naturally Aspirated Engine Engine w/ Power Adder 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 42 lbs./hr. 500-625 hp 410-525 hp
Emily Lee
Author
Emily Lee
Emily Lee is a freelance writer and artist based in New York City. She’s an accomplished writer with a deep passion for the arts, and brings a unique perspective to the world of entertainment. Emily has written about art, entertainment, and pop culture.