Fueling & Injection - Turbo fueling q's
01-26-2012, 09:15 PM
Just a quick question, How far can i get with 42lb injectors and a ractronix fuel pump kit? hp?
01-26-2012, 09:59 PM
Turbo charged with a MSD boost a pump supplying a racetronix harness I put down 521 rwhp on a dyno jet 80 percent duty cycle On my old setup. 58 psi with the stock regulator so it was not boost referencing. You can get more out of them but you have to pull the stock regulator off and turn up the pressure. You should be able to make a little more if you use a boost referencing regulator I was on 7 or 8 pounds of boost so the intake pressure takes away from the rail pressure so the difference in pressure was really on 50psi. So if I were to guess I would say at 58 psi they will support between 550-570 rwhp with a rising regulator. If pressure goes up they will support more. There is a sticky above that shows you how to calculate flow rate based off of rail pressure. Hope this answers your question.
01-27-2012, 01:16 AM
Thanks yes it does, i am just now building my fm kit with my taxes and wanted to see how far i could take the fuel setup i have caue i dont think a double pump kit is in the budget as of right now.
01-27-2012, 02:32 AM
Honestly, a set of 60s would be a good investment, even send your injectors to FIC or something.
If you want twin in tank pumps, its cheap and easy. If you dont already have one 255 at least, dont boost it on the stock pump. 255s are only $100 ea, and some fuel injection clamps and fuel line and a tee is cheap. Thats all you need, and a little fuel hat trimming. I've stuffed twins in the stock hat plenty of times. If you want a single, I've made over 600WHP with one aero 340 stock replacement, in an auto car, thats an option as well
01-27-2012, 12:57 PM
I am pretty sure the racetronix pump is a 255... Where can i find a 340 pump with a install kit for my car? and what do you mean by sending my injectors out?
01-27-2012, 01:52 PM
I can set you up with a 340pump & a Racetronix wiring kit.
You will likely have idle fuel pressure issues with that large of a pump using the stock regulator.
Feel free to call if you need more info.
01-27-2012, 01:58 PM
Damn i am not looking at running a fpr and return line right now as i have a tight budget i gotta work with... I already have a racetronix full kit inculding the pump and wiring. Could you pm me a price on just the pump? and what kind of fuel issuses would i run into?
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