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FFD OBS Stage 1.5 Injector Set (8) | ffdAPST1.5OBS | 1994-2003 Ford Powerstroke 7.3L
New Alliant 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 105-155 hp 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 your 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 235 hp 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 the OBS 66mm turbo upgrade or intercooler we suggest the 180cc option.In the 99-03 Powerstroke 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.
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.Shipping charges include a return label for your cores if you have not selected to send in cores first. If you have selected to send in cores first before your product ships it is the customers responsibility to ship cores in.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.
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