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 Injectors

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Old 07-15-2015, 11:18 AM
  #1  
red95fiveo
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Default Fuel Injectors

I'm new to the forum so this is my first post. I have a question regarding upgrading my fuel injectors and whether or not I should even both with it. I'd like to list what I've done to the car so far and get your advice on what size(if any) to upgrade to. Here's the list of what I've done so far

Edelbrock Performer RPM Upper and Lower intake manifold, 70mm throttle body, CAI, MSD Ignition and distributor, 9mm plug wires, underdrive pulleys, Off road H Pipe w/ flowmasters, short throw shifter, eibach lowering springs.

I know some of those modifications don't matter in terms of fuel injectors but I figured i would list them any way. Please give me your opinions on upgraded injector size or if I should even bother at all with changing them. I don't really plan on doing too much more to the car any time soon. Thanks for your input
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Old 07-15-2015, 11:30 AM
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jwog666
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dont bother with the injectors, they will gain you nothing with your current setup, to make use of more fuel, you need more air, without that the pcm will dial back the trim and you will only inject as much fuel as u did with the stock injectors
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Old 07-15-2015, 11:39 AM
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red95fiveo
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Thanks! That's what I needed to hear
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Old 07-16-2015, 06:28 AM
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88 orangepeel notch
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I agree, with your stock heads and exhaust yet, no need for bigger injectors.
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Old 07-16-2015, 02:01 PM
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Cosmocrazy
 
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Are they the original stock injectors? If so I would have them cleaned if not replace them or have them tested for proper function.
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Old 07-16-2015, 02:28 PM
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Rob@Evolution
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I'd stay stock but depending on the mileage that's on them I'd replace with same size.
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Old 07-19-2015, 03:48 PM
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red95fiveo
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the car has 46K original miles and it has the stock injectors. I'll probably just leave them be for now. Thanks for the input!
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