When i see an add that says "100hp" injectors. What does that mean? I could'nt imagine they alone were good for 100 horsepower. So what is the deal???

 

usually that is what it means, but it depends upon what else you have done to the truck. you have to have a boost fooler type of box/chip that will allow the engine to fuel those big injectors above and beyond when it reaches stock boost levels.

I had 150hp injectors, and with the edge comp turned off (still does boost fooling but not adding any power) the truck made 376hp at the wheels, and considering a stock truck does about 190hp, thats 180hp picked up at the wheels. But I did have a larger turbo on the truck supplying plenty of air to burn the fuel those injectors added, rather than watch all the extra fuel go out the exhaust in a cloud of smoke.

 

I agree, in my experience the rated power is close to what is claimed (usually 5-10 more horses than claimed). depending on tranny mods and airflow and things! And my mileage goes up the bigger the injector i go!