351w EFI install

[lonesouth]

I've had this stuff in my attic for more than a year. I finally burned the boats and sold the carb, so now its time to make the switch. I've already installed a set of BC fuel lines, and begun to remove some of the mess of wires I've created in the last 6 years. I'll post some pics up this weekend.

edit:
I am running without a VSS and have no issues.

 

[sanndmann3]

Very cool. i'm in the middle of a similar project right now. 351W using Exploder computer and a harness from EFI Guy. good luck and will be checking in to see how its going...

 

[Timmy390]

Make that 3 of us.....

351W from 96 E350 van, van harness converted from SD to Mas Air, 94-95 Mustang ECU, 96 Explorer GT40 upper, marine GT40 lower, van front dress.

Building the engine now.....installed the pistons tonight.....Progress has slowed due to coaching a 14U travel softball team. Shawnee, OK this weekend....

Tim

Tim

 

[lonesouth]

I got a lot of the old stuff out of the way. Removed a LOT of wires, the carb, intake, etc.


Mess before removing wires




After removing carb









Intake removed








What needs to go back in

 

[lonesouth]

I also ordered a replacement firewall grommet from LateModelRestorations.com. $16 shipped sure beats scrounging a used one from the pic-n-pull!

http://www.latemodelrestoration.com/item/LRS-8693FWG/Mustang-Firewall-Grommet-For-EFI-Harness-86-93

 

[dclack]

I see your harness is wired for a remote TFI. Did you do that yourself? I just picked up a '95 351 and the remote TFI that came with it and would like to hook it up to my Mustang harness, but I can't seem to find a good how to thread on it. I'm sure it's as easy as following a good wiring diagram, but I would still like to hear from someone who's done it before.

 

[lonesouth]

I did not do the harness, I bought it complete.

 

[dclack]

So I have another question for you... I see in your pic you have a black TFI; what ECU are you going to use? From what I've been reading, it sounds like all 93 and earlier ECUs require a grey TFI. I have the same black remote TFI from a 95 F150; but since I have an A9P, I'll need to swap to a grey module.

 

[roundhouse]

I'm fixing to tackle this as well

I already have a 90 mustang 5.0 with mass air in the bronco
Running it since '99

The consensus seems to be that I can run the stang mass air, computer and harness
But alot of disagreement on how to hook up the dizzy

 

[dclack]

With out trying to muck up lonesouth's thread too much... Yes, you can run all the stang parts and probably the easiest way to hook up the dizzy is to get one from an older 351 that has the mounted TFI. But I'm a cheapo and since I already have a perfectly good dizzy, I want to use it. Plus an older dizzy with the mounted TFI would most surely have a cast gear for a flat tappet and I need a steel gear.

Which brings me to another question for lonesouth... have you checked the gear on that dizzy? Being remote mounted, I'm almost certain it has a steel gear (unless someone changed it), which would destroy your flat tappet cam.

 

[Bronco_69]

I see your harness is wired for a remote TFI. Did you do that yourself? I just picked up a '95 351 and the remote TFI that came with it and would like to hook it up to my Mustang harness, but I can't seem to find a good how to thread on it. I'm sure it's as easy as following a good wiring diagram, but I would still like to hear from someone who's done it before.

search some of my threads. i did my own remote mount set up. i used a grey tfi and a 89 5.0 computer. i think i posted a pic or two of the diagram. i have since sold the bronco and cant be much more help

http://classicbroncos.com/forums/showthread.php?t=197853&highlight=remote

http://classicbroncos.com/forums/showthread.php?t=148561&highlight=remote

 

[lonesouth]

here are the two ECMs I got with the setup. I did check the dizzy gear and it is steel, so that will have to be swapped. I looked briefly but can't be certain that I can swap the cast from my old dizzy onto the new dizzy.

 

[dclack]

Looks like you're good to go with the black TFI. The U4P0 is from a 94-95 Mustang with the AODE and the P3M is from a 91-93 T-Bird with an auto. It looks like there are a couple wires different between them; so depending on how your harness is wired, you may need to make some mods to run one ECU over the other. Here's a good link for you to read.

 

[Timmy390]

The U4PO is for an auto 94-95 GT 5.0

W4H0 and T4M0 are the 94-95 GT 5.0 man. trans

Tim

 

[lonesouth]

is one better than the other? do I need to be concerned about the U4P0 complaining about not seeing any trans input since I'm running a C4?

 

[KyleQ]

The TFI is the reason I went with a MSD Pro Billet - 351W roller TFI distributor. It doesn't exist in the wild - I've got multiple TFI setups, this was just easier and better.

I like how there are less exposed wires on the EFI swap than before...

 

[dclack]

Reading that thread I posted, it sounds like the U4P0 is more compatible with a TwEECer and likely has better fueling curves being from a newer Mustang vs an older T-Bird. The ECU does not receive input from the trans, so no issues there. I'm running a ZF and an A9P which is an auto ECU from a fox Mustang.

 

[Timmy390]

is one better than the other? do I need to be concerned about the U4P0 complaining about not seeing any trans input since I'm running a C4?

That I don't know. I would guess the U4PO would be but I'm only saying that because it's from a stang.

I'm looking to run either W4H0 and T4M0 because I'm running an manual trans.

I'm told/have read that the ECU will throw codes about the trans not being there but they will not set off the CEL. Don't know that for sure.

I know the 94-95 ECU's can be burned/chipped. Maybe EFIGuy can get into those? I plan on having him work my van harness and do what he can (if he can) to the ECU when the time comes.

Tim

 

[lonesouth]

the distributor I got was broken, so I'll be picking a new/used one. Looks like the same dizzy was used in both EEC-IV & OBDII vehicles, but the steel gear is cheaper than cast. I'll try to run out to PnP for one, or just grab a new one from the local parts store for $69.

 

[lonesouth]

Found the original thread so hopefully this will make the install go more quickly.

http://www.planet4x4.net/forums/showthread.php?t=18644