From http://www.robietherobot.com/storm/f...ectorguide.htm with some modifications (450cc DSM injectors instead of 322cc whatever injectors)
Fuel Injector Spotters Guide and Information
So, how much power is this injector good for? That depends on the air/fuel ratio that is used, but a good rule of thumb is to divide this flow figure by 5 to get a hp capability. So, 450cc divided by 5 = 90hp maximum fuel flow with this injector. If you want to be pedantic, it's the mass of the fuel (not the volume) which is the critical factor. Assuming a "normal" fuel density, the mass of the fuel in pounds per hour can be worked out by Dividing the cc per minute figure by 10.5. For this injector, that gives a mass flow of 42.86 pounds/hour. To convert from pounds/hour to horsepower capability, multiply the figure by 2.04. So 42.86 pounds/hour multiplied by 2.04 gives a horsepower capability of 87.43hp - nearly the same as we got from the cc/minute figure.
The power ratings discussed above are for each injector. This means that you need to multiply this rating by the number of injectors that are to be used. So, if you were using the DSM 450cc injectors in a 4 cylinder engine (with one injector per cylinder) the max power that the injectors could deliver fuel for would be about 349.72hp. All of these figures are assuming that you are running an average fuel pressure of ~43psi and at 90% duty cycle. At 80% duty cycle, the DSM 450cc's would be capable of 310.86hp.
Conversions
500cc per minute is approximately equal to 49lbs per hour which is equal to approximately 100hp.
lbs/hour = cc per minute / 10.5
lbs per hour = HP / 2.04
cc per minute = lbs per hour x 10.5
cc per minute = HP x 5
HP = cc per minute / 5
HP = lbs per hour x 2.04
Fuel Injector Spotters Guide and Information
So, how much power is this injector good for? That depends on the air/fuel ratio that is used, but a good rule of thumb is to divide this flow figure by 5 to get a hp capability. So, 450cc divided by 5 = 90hp maximum fuel flow with this injector. If you want to be pedantic, it's the mass of the fuel (not the volume) which is the critical factor. Assuming a "normal" fuel density, the mass of the fuel in pounds per hour can be worked out by Dividing the cc per minute figure by 10.5. For this injector, that gives a mass flow of 42.86 pounds/hour. To convert from pounds/hour to horsepower capability, multiply the figure by 2.04. So 42.86 pounds/hour multiplied by 2.04 gives a horsepower capability of 87.43hp - nearly the same as we got from the cc/minute figure.
The power ratings discussed above are for each injector. This means that you need to multiply this rating by the number of injectors that are to be used. So, if you were using the DSM 450cc injectors in a 4 cylinder engine (with one injector per cylinder) the max power that the injectors could deliver fuel for would be about 349.72hp. All of these figures are assuming that you are running an average fuel pressure of ~43psi and at 90% duty cycle. At 80% duty cycle, the DSM 450cc's would be capable of 310.86hp.
Conversions
500cc per minute is approximately equal to 49lbs per hour which is equal to approximately 100hp.
lbs/hour = cc per minute / 10.5
lbs per hour = HP / 2.04
cc per minute = lbs per hour x 10.5
cc per minute = HP x 5
HP = cc per minute / 5
HP = lbs per hour x 2.04