Fuelie 390?
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Laughing Gas
Joined: Nov 1999
Posts: 954
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From: 15 miles west of Venus
Fuelie 390?
I recently acquired an interesting bit. It looks like they used 5.0 Fox injection parts. Unfortunately I did not get the TFI distributor with it. Will it work?
Fleet Mechanic
Joined: Oct 2011
Posts: 1,891
Likes: 103
From: Birdsboro PA
It could probably be made to work, you would really need to know how to tune though. I know I have read that some of the ECU's used on the 5.0's were very good for reprogramming and using on different engines. I have never done it myself and don't know how certain these claims are though.
Senior User
Joined: May 2016
Posts: 190
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From: Lewis County, WA
I am by no means a Mustang "expert", but I do know that there were different EFI setups - the '86-'88 speed density system and '89+ mass air (MAF) system. Here is an article that explains the two better than I can: Electronic Fuel Injection Mass Flow vs. Speed Density - Hot Rod Network
More to the point...to make everything work, you would probably need the engine harness that came with the donor vehicle, as well as the ECU. Did you just get the manifold with injector rails and TB? Was this on a running engine at some point that you know of?
More to the point...to make everything work, you would probably need the engine harness that came with the donor vehicle, as well as the ECU. Did you just get the manifold with injector rails and TB? Was this on a running engine at some point that you know of?
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