7.3 Stage 1.5 Injectors

Power stroke 7.3 stage 1.5 performance injectors fits the 1994-2003.

The difference in the stage 1.5 is the 30% over larger nozzles.  The 30% nozzle allows more fuel to exit the injector quicker into the combustion cycle which increases horsepower even further.  The injector has a limited time to inject fuel into the cylinder for the combustion cycle.  We measure this time in milliseconds.  With a larger nozzle we can inject more fuel per millisecond into the cylinder for combustion, which creates more power.  The downside to a larger nozzle is the extra fuel creates more heat and black smoke.  So the larger the nozzle the more EGT’s are created and the need for more air upgrades are needed.

The injectors in the 94-97 Powerstroke will increase horsepower from 105-155hp to the rear wheels with a custom tuned performance chip.  The stock AA injectors for the 94-97 OBS Powerstroke flow approximately 90cc of fuel.  The stage 1.5 injectors can double the fuel flow reaching up to 180cc.  The gain in power in substantial with the stage 1.5 injectors over the stock injectors.  Stock AA injectors are limited by fuel delivery and even with performance tuning only about 235hp total is the limit of the gains.  With the extra fuel of the stage 1.5 injectors the increases can be up to 380hp total horsepower.  In the 94-97 OBS we recommend choosing the 160cc injectors if you have a stock turbo and stock intercooler.  With the addition of turbo upgrade or intercooler we suggest the 180cc option.  

In the 99-03 Powerstoke you will have to run a custom programmed chip to make the transition from split shot injection to the new single shot injection.  Horsepower increases from 80-105 hp and mileage increase from the more efficient single shot design.  The stock AD injector in the 99-03 will flow approximately 145cc of fuel but with with the split shot design 10cc of fuel is wasted in the pilot injection cycle.  With that said, the effective flow rate of the AD stock injector is 135cc.  We recommend the upgrade to 180cc in the 99-03 Superduty with the results of about 105hp over a stock truck with a performance chip.

Each injector comes with a new nozzle, new *Tungsten coated plunger and barrel assembly, new springs, and as needed more internal wear parts are replaced if needed.  Flow tested and matched down to a 1% variation at idle and wide open flow.  New internal and external O-rings are installed.

Please note- a custom tuned chip is required to make these injectors work properly in your truck.

We recommend installing new glow plugs when installing injectors.  Theses are easy to change at the same time as the injectors.  However valve covers are reusable and should be fine unless the harness is damaged.

We do not charge any other fees to repair your core injectors.  Please note some of the other companies charge for bad parts on top of the advertised price and do not use new plungers and barrels or nozzles in their injectors.   Injectors that have ran vegetable oil leave a damaging coating and will not be accepted as cores.

*Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes for use in industrial machinery, cutting tools, abrasives, armor-piercing rounds, other tools and instruments, and jewelry.

PLEASE SEND ALL CORES TO:

Full Force Diesel

ATTN: White’s Diesel

7822 Manchester Pike

Murfreesboro, TN 37129