I'm doing the research to swap my 94 maf, E4OD computer out for a 89-93 Mustang maf manual trans computer..
Here Is the ? I have...
#44 on the pickup is HEGO, the Mustang has two, a L and a R HEGO, do I just tie the L and R HEGO #43 and #29 together? and what about the #44 and #49(the HEGO GNDs)?
On the 94, pin 18 and 19 is Data + and Data - I can't find them on the Mustang pinout, so do i just eliminate them? I think yes, but not sure..

Also, Do I need to wire in a BARO? for pin #45?
If so, what are the other two wires? Like, where to I hook them up?

 

Yes.

Ignore these.

Pin 19 becomes the fuel pump monitor so the wires currently attached there have to go.

No, the truck MAP sensor becomes a Baro when you disconnect the vacuum line, no wiring changes necessary.

The spreadsheet below outlines the changes necessary to use a Mustang EEC in a truck.

 

I have a original MAF E4OD motor, and don't see a MAP listed on my pin out.. or under the hood.

 

Nice Pinout Conanski!!! really helpful

BigLar

 

i thought if you had the e4od trans you need another e40d computer? i was doing research on maf conversion, but though i was limited to 3 or 4 computers because of the e4od trans.

 

It's there unless you have a MAF truck, and if that's the case why are you converting to a Mustang EEC?

 

If you want MAF without the added expense and complication of either buying a dedicated trans controller or swaping in a non-computer controlled trans.. then yes you are limited to one of the truck E4OD EEC's.

 

It was originally a MAF 5.0, E4OD, I swapped in a 5.8, ZF 5 speed. Add the mods(egr/smog delete) I've done, a Mustang ECU is the only way to keep the CEL from coming on. Plus you have any idea how many tranny codes come up when there isn't a tranny there for the computer to read?!

 

Oh yeah I remember all that now, so in your case you're going to have to add wires for the MAP/Baro sensor.

 

I found a good diagram on that, and also was told it would be wise to add a second 02 sensor... I think I have it mostly figured out now. Thanks.

 

I can tell you the second O2 isn't necessary, converted my truck to dual sensors this past summer as an experiment and it made no difference at all. Keep in mind I have a wideband O2 sensor and a tuner system that allows me to watch what the computer is doing in real time so I have data to back this up.

 

Hmmm, ok... I'll keep that in mind.