Going efi on stripped car - Ford Mustang Forums : Corral.net Mustang Forum
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post #1 of 14 Old 02-01-2017, 01:55 AM Thread Starter
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Going efi on stripped car

I have a 1981 Fairmont that has no harness's I want to go efi without the body, and dash harness is there a way to do this? I tried looking around and didnt find much does anyone have any info on this?

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post #2 of 14 Old 02-01-2017, 02:10 AM Thread Starter
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Should also add looking to do 5.0 maf

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post #3 of 14 Old 02-01-2017, 10:31 AM
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Having trouble figuring out this question. Does the car literally have no wires in it? and you're wanting to drive it that way?

You can get a standalone ECU like microsquirt, MS2, MS3, or PIMP that comes with an EFI harness so you just solder up all your sensor connectors, injector connectors, etc. at the correct lengths and make a small relay circuit to power it all up (fuel pump, IAC, ECU, everything). This doesn't tie into any other harnesses on the car, and will fully control the engine. Doesn't require MAF if you go this route either.
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post #4 of 14 Old 02-01-2017, 11:51 AM Thread Starter
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Yeah I got it stripped there are zero wires in. I was gonna put a carb on it and race it but it ended wiring a few things up like a one wire alternator, electric fuel pump to a switch and an msd 6al-2 so the car is wired to run. But I'm not satisfied and want to go efi just trying to figure how to do this with where I'm at
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post #5 of 14 Old 02-01-2017, 12:00 PM
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Oh, okay. So you can pretty easily just grab a standalone controller with a harness (either plug and play or DIY), slap it in there, and go to work calibrating and tuning.
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post #6 of 14 Old 02-01-2017, 01:27 PM Thread Starter
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So in other word that megasquirt is a good option
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post #7 of 14 Old 02-01-2017, 03:42 PM
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If wanting to stay with the ford EFI look into the Ford Racing stand alone harness. They work great!
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post #8 of 14 Old 02-01-2017, 09:02 PM
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There are a large number of standalone controllers on the market at the moment. Megasquirt is good, holley HP and Dominator EFI are good, FAST, Big Stuff 3, PRO-EFI, Motec, there are a bunch. It really depends on what you want to spend. As posted above, if you're just running a stock 5.0, you can get a standalone harness and I think run it with a chipped stock ECU.
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post #9 of 14 Old 02-02-2017, 01:59 AM Thread Starter
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That ford racing stand alone harness is exactly what I'm looking for, just looked into it and that is ideal. Thanks for some good info guys
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post #10 of 14 Old 02-02-2017, 02:20 AM Thread Starter
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Also if I were to go with the stand alone ford racing harness, how do I determine weather the stock ecm is a maf ecm, and is one better then another for a 5 speed application?

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post #11 of 14 Old 02-02-2017, 08:09 AM
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Originally Posted by kcoletta91 View Post
Also if I were to go with the stand alone ford racing harness, how do I determine weather the stock ecm is a maf ecm, and is one better then another for a 5 speed application?
The computers have a part number on them. Find an A9L or A9P. The A9L is a 5spd computer and A9P is auto, although both will work with a 5spd. The Auto computers I believe had a more aggressive timing curve that provided a little more punch on 5spd cars, but idle can often hang around 1500RPM when you push the clutch in while rolling, until you come to a stop where it falls. Just tradeoffs I guess. I would personally just buy an A9L.

Are you deleting all of the emissions stuff? If so, you'll need a tune to get rid of Check Engine issues and limp mode.

If that's the case, you can get either an SCT Eliminator chip and have a shop custom tune it or get a Bama chip (from americanmuscle.com) with some half-decent preloaded tunes that will maybe give you a bump in power but will at least take care of the check engine and limp mode issues.
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post #12 of 14 Old 02-03-2017, 03:03 AM Thread Starter
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I planned on getting the car tuned so I would assume that would take care of any limp modes or a cel
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post #13 of 14 Old 02-03-2017, 02:02 PM
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I planned on getting the car tuned so I would assume that would take care of any limp modes or a cel
probably good to go with a chip or piggyback then. It'd be the quickest way to get what you want. If you're wanting to learn how to tune as more of a learning tool for yourself, you'll probably want a standalone controller, which both you and a tuner can tune with.
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post #14 of 14 Old 02-04-2017, 02:48 PM
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Look into Pro-M's setup, new technology, new harness, you can run coil on plug if you'd like. No need for a chip or a tuner, you'll save money in the long run, trust me, any questions regarding the system feel free to PM me.
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