N14 injector swap...

Negative on the above. Same injectors. Even if one had "bigger hole" still the same amount of fuel.
BTW...how are the injectors getting weak?

 

Bigger hole only works better if your trucks mass air flow really thought you needed more fuel, otherwise you would be just spending dollars on a dream.

If it is getting sluggish and engine runs fine I would look elsewhere, ie turbo.

 

I am no cummins expert but I imagine that every thing else being the same if u go with larger injectors you would gain power. I know on a cat the only difference between different flowing injectors is the tip so I can't imagine cummins being much different.

 

The injectors are controlled by the mass air flow sensor. Having the potential of more volume does not mean you will get more volume. The mass air sensor needs more air to dump more fuel unless you bypass it.

 

There is no mass air flow sensor on a n14 the fueling is controlled by the
Boost pressure sensor input and throttle input plus various other inputs.

 

ECM and camshaft determine and trigger fuel amount and timing of injection via different sensors (crankshaft position, engine temp, outside temp, air-flow, engine RPM, TPS (throtle Position Sensor), transmission, MAP sensor (turbo sensor), etc.
The function of the injector, ANY injector, is to receive, store, automize and spray the fuel. Injectors DO NOT determine when and how much of fuel is need.
THUS, using "larger" can only create problems.
The best and strongest fuel injector is one that is clean and adjusted.

PS. CAT, VOlvo,...... do have options of getting "bigger" injectors, but that ALSO calls for other modifications. Not worth it for over-the-road and off-road use. Yes for competition.

 

Yes I agree that the injector does not contol the timing or duration of the injection event it is a slave to the ECM. Although a injector with a bigger tip will inject more fuel than the smaller one and making more power so long as sufficient air is available to burn it. Exactly how much bigger the injectors are will determine if they are feasable for his application. If they came standard in the 525 Hp models than I do not think that they would Hurt the engine. Yes any time you add more power to a engine you are shortening the lifespan of the engine..... How much depends on the load factor and the driver.

 

at 5-600 each + install id just replace the bad ones and call it a day