treimche

Are there any resources available to plug in some numbers to see what type of fuel pump and injectors will net what power levels? I am basically looking to see about how much power my current fuel system will support. I am going to be building a bottom end in order to turn the boost up and make more power, but want to see if my fuel pump or injectors will be the limiting factor. Here are some of the details:

Inline Pro F24 bottom end
P-Tuning GTX3576 turbo kit
AEM Infinity EMS
ID1700 injectors
SOS Walbro 450 pump w/ install kit and re-wire
AEM fuel rail and FPR

On a Mustang Dyno, with the stock bottom end, my car made 558whp and 383 ft/lb torque on E85 at 20psi.

AP1Chief

450 good for about 6-650 on E85%

1700s on a DJ probably be around 650ish (560-570 on a MD) at 90% that's also when the 450 is gonna start giving up too.

ALSO this is al based on stock Fuel pressure.

treimche

That's good information, thank you. My tuner said that I had a lot of room to go with fuel and boost when he tuned it to 558whp on his Mustang Dyno. I should try to find out what the injector duty cycles were.

timg

This calculator from ID is nice.
Fuel Flow Calculator - Injector Dynamics

For my other cars, I've taken to Excel to plot fuel injector flow rate vs. fuel pump flow rate. This helps find the optimum fuel pressure or pump voltage.

Tim

treimche

Yes that looks helpful. I was playing with that a bit, but I'll have to dig a little deeper into it and see what I can come up with.

AP1Chief

MD numbers.... I honestly don't think u got a lot more on that 450.

Duty cycle would help to see how much injector you got left. I bet your 85-90% already.