Trezent

iTrader: (1)

Ok here we go.
First off i did some searching and couldnt really find what i was looking for. on here.

Well i have been doing a little calculations dealing with my fuel system flow rates and IDC's at given fuel pressures and have came up with this

from what i have read here 43.2# injectors are pretty much maxed out at 10 psi, IDC wise, on our trucks. From the math that i have done using a boost referenced regulator and 65 psi of fuel pressure bring the actual flow rate of my injector to somewhere around 52lb/hr. Assuming the fuel pump can maintain the fuel flow then 10# of boost should only push the injectors to roughly and 82-87% IDC. Shooting for 400 wheel HP. which is what i am attemping.

Please if i messed something up here tell me.
I mean would the boost in fuel pressure work in this case or is it just one of thoes times where numbers/math is not reality.

Oh and please i am learning the ropes here. if this comes off as a stupid question i am sorry.

Static54

iTrader: (1)

Since Im kind of in the same boat as you. Gonna be my first boost application. I found these Injectors. Are these suitable for an application like yours?

Im running a 5.3L with the MPT70 soon trying to get as much info as I can as well.

Atomic

iTrader: (42)

Issues arise when you use injectors far above their rated pressure. If I were you, I would fork up the cash for some 60s and be relieved in the fact knowing you will have plenty of injector to take you a long, long way. I pushed 60s with a single walbro 255 to 600+ rwhp.

smokeshow

iTrader: (16)

43lb injectors should handle 400rwhp easy. Never hurts to overestimate in the fuel department though..

Trezent

iTrader: (1)

yeah i been thinking about that i was just crunching numbers. i already spliced my connectors for the SVO greentops im running.

i got two sets. i think i am just gonna send one set off to FIC and let them reflow them. heard they can do it for 2 bills.

just drives me crazy thought for sure the 42's at 60psi would do.

i got HP tuners comming in next week. i guess i can play with the fuel pressure and log IDC's and make my decision.

if anyone else would like to chime in please do so. i am just scratching the serface of fueling and tuning. i am a quick learner though

SRTKLLR

iTrader: (1)

If you bring your fuel pressure to 65 you will also have to add an additional 10 using a boost referenced regulator since you will be boosting 10 so you will be taxing your fuel system a lot.

Looking at a online calc it looks like the 43lb injectors should be good for 400rwhp.

Our trucks already run at 58-60 psi fuel pressure stock.

What are your injectors rated at? Ford usually rates them at 39 psi so they would flow more in our trucks.

Trezent

iTrader: (1)

yeah there rates at 43.5 or something like that. So at our pressure 58 they are around 50 i think.

playing with numbers is fun!! not really