Bigger injectors with a supercharger?

5P0INT0 · 04-10-2003, 04:18 AM

I will be running 9 pounds of boost into my stock 5.0 engine. My mustang shop said bigger injectors would be a good idea. They said it wouldn't give me any HP gains, but would be an "insurance" that my engine will always run rich and have plenty of fuel. He says if it runs lean at all it could blow a piston. What do you guys think, should I get the bigger injectors? Do I need them? Do you guys run them, and if so, at what point did you decide you needed them? Thanks in advance

91GTturbo · 04-10-2003, 08:28 PM

Get the injectors. Your shop was right, they are good insurance. Not enough injector = not enough fuel = boat anchor if you know what I mean. 9 lbs on a stock motor, get 30's minimum and a 255 in-tank fuel pump(GSS340).

Stang_Crazy · 04-10-2003, 08:33 PM

Running 9psi with 30's is not going to be a problem. The 30's will allow you to tune WITHOUT the FMU which is a huge plus. Also, I'll second the opinion of a big fuel pump (Walbro GSS305 or GSS340 will both work)

04-10-2003, 04:18 AM	#1
5P0INT0 Registered Member Join Date: Jan 2002 Location: Calgary Alberta Posts: 15	Bigger injectors with a supercharger? I will be running 9 pounds of boost into my stock 5.0 engine. My mustang shop said bigger injectors would be a good idea. They said it wouldn't give me any HP gains, but would be an "insurance" that my engine will always run rich and have plenty of fuel. He says if it runs lean at all it could blow a piston. What do you guys think, should I get the bigger injectors? Do I need them? Do you guys run them, and if so, at what point did you decide you needed them? Thanks in advance __________________ 94 AOD GT 4.10 gears and Auburn posi, 3000 stall with a shift kit. Lower control arms, subframe connecters, Under drive pullies, Procharger running 9lbs of boost, 24lb inj, custom chip, Saleen rims running 295 on the rear, Bassani X pipe and Cat back.

04-10-2003, 08:28 PM	#2
91GTturbo Registered Member Join Date: May 2001 Location: Valdese, NC Posts: 361	Get the injectors. Your shop was right, they are good insurance. Not enough injector = not enough fuel = boat anchor if you know what I mean. 9 lbs on a stock motor, get 30's minimum and a 255 in-tank fuel pump(GSS340). __________________ 91 single turbo vert

04-10-2003, 08:33 PM	#3
Stang_Crazy It's never clean enough! Join Date: Jan 1999 Location: Shaler, PA Posts: 1,542	Running 9psi with 30's is not going to be a problem. The 30's will allow you to tune WITHOUT the FMU which is a huge plus. Also, I'll second the opinion of a big fuel pump (Walbro GSS305 or GSS340 will both work) __________________ ~Dan 2001 SVT Lightning 89' GT : Taking up garage space and waiting for a buyer... Rice Hater's Club - Member #11

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