will a bosh 420L/ph support 750ish @rw FI

I have a bosh 420L/ph pump and hope to see 750ish at wheels. Will this pump be enough or will it need a little help form a BAP or maybe another pump? car will have at least 15# boost pushed in to it.
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97 bird,383,ysi,AFR210,jesel 1.6 shaft m,LTCC, water/meth,crower rods,crower crank,Dimonds@8:1, moser 12,........... ...... ..............

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Using forced induction you'll want a B.S.F.C. (Brake Specific Fuel Consumption) of about .6, or you will be using .6lbs of fuel per hour per horse power. For this example I estimated 100hp drive train loss. (B.S.F.C. is calculated by flywheel hp) Using the formula in the picture above you get this:
( 850 X .6 ) / (8 X .8) = 510 / 6.4 = 79.6875
So you'll want 80lb/hr injectors, and by multipling that by 8 we get the fuel consumption of the engine.
79.6875 X 8 = 637.5
You engine should consume about 640lbs of fuel an hour at peek power. Using 6.538 as the weight of gasoline per gallon (this is the number GM used for the stock calibratino of my PCM, to be perfectly acurate you'dd need to actually weigh a gallon of the exact fuel you plan on running, as every blend / ocante will weigh slightly different) that translates to:
637.5 / 6.538 = 97.5
And 97.5 converted to liters is:
97.5 gal = 369.1 liters
So at peak power your engine will consume ~370 liters per hour, so yes a 420L/ph fuel should be sufficent.

Don't forget, the pump must supply not only the engine, but also provide sufficient excess fuel recriculation to allow the fuel pressure regulator to modulate the fuel return to hold the rail pressure steady. I would add at least 10-15% extra for the recirculation.

Next issue is at what pressure is the pump rated at 420 LPH? And at what pressure are you running your fuel system?

And to keep the calculations to a minimum, all you need to do is multiply the flywheel HP X BSFC to get the fuel consumption. No need to size the injectors and then calculate backwards from there. It introduces an error, because you sized the injectors based on an 80% duty cycle, then assumed the injectors were operating at 100% DC to get the engine's fuel consumption.

850 flywheel HP X 0.60 #/HR/HP = 510 #/HR

15% recirculation allowance:

510 / 0.85 = 600 #/HR.

That was the only formula I could find real quick, and I used the duty cycle at 100% to allow for some safety room.

you guys f...ing rock! :bow: Thanks for taking your time and not just answering w/yes or no. now i can see it for my self,and figure it out for the next time/upgrade:D