will i need to upgrade my fuel pump?

93hatch · June 11th, 2008, 03:40 PM

looks like im buyin seans gt40p heads, got the explobra intake mani already, and cobra fuel system (ecu, 24lb injectors, maf, and tb) so my question is when i do swap the heads and my cam in, will i need a bigger fuel pump? and with that, an adjustable fpr? cuz it is gona get chipped and tuned

1BADSTANG · June 11th, 2008, 03:50 PM

190

jrh_1980 · June 11th, 2008, 03:51 PM

you should be fine with the stock fuel pump however it is always good to change out the pump if your planning on doing any other mods.

93hatch · June 11th, 2008, 03:56 PM

Originally Posted by 1BADSTANG

190

thats what i was thinking, and i dont plan on boostin it ever the heads cam is as far as im gona go, just wontering if ill need a fpr for the tuners to mess with? i dont think i will but im not sure

ryans88gt · June 11th, 2008, 04:38 PM

No, you will not need a AFPR if you are tuning through the computer...that is assuming your stock regulator is doing it's job.

They will tune based on injector pulse width and not fuel pressure.

1slo5.0 · June 11th, 2008, 07:50 PM

Originally Posted by 93hatch

looks like im buyin seans gt40p heads, got the explobra intake mani already, and cobra fuel system (ecu, 24lb injectors, maf, and tb) so my question is when i do swap the heads and my cam in, will i need a bigger fuel pump? and with that, an adjustable fpr? cuz it is gona get chipped and tuned

One of the first things I do on every Mustang I put my hands on is a 255lph fuel pump for several reasons. Chances are the car has a ton of miles on it so the pump has had a long life, the stock pump is adequate for the stock engine and that is about it and lastly I choose a 255lph pump because the extra couple of bucks is worth it to me to not have to change the pump again in the future if I decide to make other changes that demand more fuel. There are no negative side effects of running a 255lph pump over a 190lph, 155lph or any other pump.

93hatch · June 11th, 2008, 08:49 PM

so just to be safe i can throw on a 255lph fuel pump and let the tuner take care of the rest?

83fox · June 12th, 2008, 12:16 AM

correct. a lot of people run 255lph pumps no matter how serious the motor is. a lot of people i know run them on just heads or intake

June 11th, 2008, 03:40 PM	#1
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,665 iTrader: 0 reviews	will i need to upgrade my fuel pump? looks like im buyin seans gt40p heads, got the explobra intake mani already, and cobra fuel system (ecu, 24lb injectors, maf, and tb) so my question is when i do swap the heads and my cam in, will i need a bigger fuel pump? and with that, an adjustable fpr? cuz it is gona get chipped and tuned __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

June 11th, 2008, 04:38 PM	#5
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,627 iTrader: 0 reviews	No, you will not need a AFPR if you are tuning through the computer...that is assuming your stock regulator is doing it's job. They will tune based on injector pulse width and not fuel pressure. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

June 11th, 2008, 08:49 PM	#7
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,665 iTrader: 0 reviews	so just to be safe i can throw on a 255lph fuel pump and let the tuner take care of the rest? __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

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June 11th, 2008, 03:50 PM	#2
1BADSTANG Hardcore Enthusiast Join Date: Sep 2007 Location: long island Posts: 1,517 iTrader: 0 reviews	190

June 11th, 2008, 03:51 PM	#3
jrh_1980 Regular 89 Mustang LX 7.90@90mph 8th Join Date: Feb 2008 Location: Macomb, Illinois Posts: 151 iTrader: 1 reviews	you should be fine with the stock fuel pump however it is always good to change out the pump if your planning on doing any other mods.

June 12th, 2008, 12:16 AM	#8
83fox Enthusiast 1983 mustang lx Join Date: Apr 2008 Posts: 504 iTrader: 0 reviews	correct. a lot of people run 255lph pumps no matter how serious the motor is. a lot of people i know run them on just heads or intake

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