24lb Injector Fuel Questions

[mackey]

Right now, My car is putting out 39psi at idle with the stock pump. I have 24lb injectors and stock fuel pump on the car. Will the stock fuel pump keep up with the engine? It is a H/C/I car. I am having a serious pinging problem now and I think this may be what is causing it.

 

[Daggar]

Nothing about your mods or HP. SD or MAF. Pump could your problem but that would depend on how many ponies you're putting out.

 

[Michael Yount]

Depends on the combo and power output - but the stock pump usually won't support much more than mild upgrades. And it certainly won't keep up with what the 24's are capable of. Need at least a 190 - might as well throw the 255 in there and be done with it.

 

[mackey]

Yes, But if I did not have a sufficient enough fuel pump would it cause pinging? I have Trickflow H/C/I. 39psi at idle. No idea what it is under a load though.

 

[Daggar]

If your Air fuel ratio is lean then yes. It can cause pinging.

 

[Michael Yount]

mackey - tell us more about what year and how your engine is modded. The more you tell us, the more helpful we can be.

 

[mackey]

Well The car has Trickflow heads, cam and intake. It has a Fuel Pressure Guage (39) at idle. It has a flowmaster catback. 24lb injectors and an 80mm pro-m. 1994 GT

 

[mackey]

Are the Fox and SN95 Fuel Pumps Universal?