Fuel upgrades - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 7 Old 05-15-2019, 12:44 PM Thread Starter
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Fuel upgrades

I have an 03 gt . Looking to see what fuel upgrades you think I'll need for around 400 how . Got a friend with an 04 cobra that just upgraded injectors so I can use them. Will I need to upgrade my fuel pump/ get a boost a pump?

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post #2 of 7 Old 05-19-2019, 02:37 PM
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Just wondering. Were you planning to do something to the PCM after putting your friend's used injectors on (besides a bigger fuel pump)? A tune?

How much experience do you have with "roll you own" modifications? Is this your first rodeo?

Have you looked at this?

Mustang 4.6 1996-2004 | Kenne Bell

Someone else has done all of the engineering for you. Just follow instructions. Turn the wrenches.

Others may chime in to mention that the SOHC motor on it's own can't move enough air to make it to 400 HP. So even if you had the fuel system and tune the SOHC just can't inhale enough N/A air to get the job done.

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post #3 of 7 Old 05-20-2019, 10:33 PM
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Do you currently have the 400hp number and just looking to support it?
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post #4 of 7 Old 05-26-2019, 05:21 PM Thread Starter
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Sorry it took so long. Haven't been on here much. I have a turbo kit ready to go on. Just wanting to see about fuel upgrades. And yes I'll forsure be getting a tune when all said and done
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post #5 of 7 Old 05-26-2019, 05:23 PM Thread Starter
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First time building a fast car but have alot of mechanic experience
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post #6 of 7 Old 05-27-2019, 07:09 AM
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An improved GT Super Car or SVT Focus fuel pump with a set of 39lbs or 42lbs injectors should get the job done. Unfortunately it's not recommended to use the 03/04 Cobra injectors on any other vehicle because they have a specific spray pattern to the setup on the Cobra. Stock lines and rails are ok at that level. If you're talking wheel horsepower then I believe you'll be close to maxing out either of those fuel pumps and you could add a boost-a-pump for some extra peace of mind. However if you do choose to add a boost-a-pump you should first consider if you're planning on making more horsepower later on. If so you may want to go with a dual 03/04 Cobra fuel pump setup with a baffled tank right out of the gate. You can run that to about 550-575whp and if you go higher then that you could add a boost-a-pump then. If you don't think you'll go over 400whp then you should be ok with either of those pumps without a boost-a-pump.

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post #7 of 7 Old 05-27-2019, 12:32 PM Thread Starter
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Got a link to a good deal on fuel pump and injectors?
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