5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Fuel injection upgrade, when is it needed on a 5.0?

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Old 03-01-2005, 01:44 AM
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Cobra Owner At 19
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Default Fuel injection upgrade, when is it needed on a 5.0?

Was wondering when a fuel injection up grade is needed in a 1994 mustang cobra. Im sure im pretty far away from it with just CAI and a chip, but i am looking into pulleys,headers and exhaust. Is that anything to worry about or will i need to up grade the injectors when i plan to do any of those?
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Old 03-01-2005, 01:47 AM
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Default RE: Fuel injection upgrade, when is it needed on a 5.0?


ORIGINAL: Cobra Owner At 19

Was wondering when a fuel injection up grade is needed in a 1994 mustang cobra. Im sure im pretty far away from it with just CAI and a chip, but i am looking into pulleys,headers and exhaust. Is that anything to worry about or will i need to up grade the injectors when i plan to do any of those?

people usually bump up to 24 lb/hr injectors when they get heads, you got some time before youll need the 24s. im still running 19s with a lot of mods but no heads and i can bump up the pressure if i need to run a little richer.
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Old 03-01-2005, 01:55 AM
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primetime5.0
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Default RE: Fuel injection upgrade, when is it needed on a 5.0?

your car already has 24# injectors so you have a long ways till you need to upgrade
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Old 03-01-2005, 02:31 AM
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Default RE: Fuel injection upgrade, when is it needed on a 5.0?

really? thats awsome, guess thats one less thing i need to buy.
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Old 03-01-2005, 02:40 AM
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Default RE: Fuel injection upgrade, when is it needed on a 5.0?

Lol thats the least of your problems if you mod your car that far.
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Old 03-01-2005, 02:53 AM
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Default RE: Fuel injection upgrade, when is it needed on a 5.0?

so then what should i worry about? better clutch for my trans? MAF sensor as stated b4?
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Old 03-01-2005, 02:55 AM
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Default RE: Fuel injection upgrade, when is it needed on a 5.0?

your not going to make any problems with just bolt ons.
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Old 03-01-2005, 02:57 AM
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Default RE: Fuel injection upgrade, when is it needed on a 5.0?

thats comforting to know. What size MAF sensor should i get when i do decide to get one? and does any one know my stock size? thanks
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Old 03-01-2005, 04:44 AM
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Default RE: Fuel injection upgrade, when is it needed on a 5.0?

Really, with the MAF it doesn't really matter what size you get, because the TB is what regulates what goes into the engine. So if you plan on doing a fair bit of tuning, probably 75+; if you plan on doing a lot of tuning, you will most likely need a 83ish.

You don't have to get a huge one, but it is one way to save some money. That's what I plan to do, buy a large MAF and have the TB control the air flow, that way I won't need to buy 3 different MAFs during my upgrading.
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Old 03-01-2005, 07:15 AM
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Default RE: Fuel injection upgrade, when is it needed on a 5.0?

or you could buy a C&L maf that only needs a cheap sampling tube if you ever want to move up in injector size. www.jdsperformance.com sells them and the tubes.

I have a 73mm C&L maf and i love it.
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