skeld

what needs to be done to run the efi 3i cabby management on the frst engine? we are in the middle of dropping the engine in and need to know what to do with the wiring. ive heard you just have to change a couple of pins over on the ecu connector and use an frst ofab ecu?

any help please, got to finish this weekend.

cheers
skeld

CraigN

incorrect

you need to swap a few wires over and use the OFAC ecu

have a look on www.fiestaturbo.com in the forums there is info in there i think

the efi cab uses same management as xr2i

Ginge !

speak to alexzvhcabrio matey as he does this conversion alot

skeld

I dont suppose you have the link to the msg on the fiestaturbo.com site?

CraigN

no

lazy bastard

M Brian

lol...

project al website isnt working at the mo.


when it is... there is a guide on there its... like duyu.co.uk or something

search for username project ST on here or ask for al on ft.com

chrissie (ragtop on here) wrote the guide for him I think. and is probably THEE best person to speak to about it

skeld

ok found it now any way. weve got an ofab ecu, which one is better ofab or ofac?

Sexy-RS

Use ofab

skeld

to use ofab do i need a cossie map sensor?

Sexy-RS

The map sensor you use will depend on what injectors / power ect you will be running / What your tuner advise's you

skeld

at the moment just need to get it running. will only be using the standard injectors. about 12 psi boost. just use the standard efi map sensor?

Sexy-RS

Then just a standard frst one would be fine, i don't think you can use the xr3i one somthing to do with boost i may be totally wrong i dunno they may be the same lol Best ask someone in the know

skeld

cheers ppl

CraigN

faye ofab is a lot harder to fit than ofac

it maybe better for somethings (i know ahmed prefers is) but ofac is a plug and play with a couple of pin swaps

you will need a FRST map sensor anyway whatever you choose a 3i map sensor cannot register any boost only vacum

ask Stu and kenny what they think about ofac

CraigN

oh and melv a guy named andy wrote the guide he hada 1.8 zvh in a dark blue cabby someone on here bought it off him used to live im romford has a black focus i think now

skeld

aparently to fit ofab, according to0 the guide on fiesta turbo.com it doesnt look like you have to do anything. it shows you how to convert the loom to ofac, then from ofac to ofab and it is just putting it back to how you started apart from modifying a few pins on a cossie map sensor.

here :

Converting an 8v 2i loom to OFAC

1) At the ECU, pin no. 27 (marked on the multiplug, brown wire) needs moving to pin 8, which is empty (this is the CO adjuster signal wire).
2) Pin no. 45 (brown/yellow) needs moving to pin 27 - this is for the MAP sensor.
3) EDIS Module pin 2 (blue/yellow) may now be disregarded as it is not used by the 0FAC ECU (pin 28 on ECU).

There are no MAP sensor pin changes as the OFAC MAP sensor is the same plug as the 2i MAP Sensor, so just plug and play.

Converting an OFAC loom to OFAB

1) Pin no. 8 (brown) needs moving to pin 27, which is empty (CO adjuster signal wire)
2) Pin no. 27 (brown/yellow) needs moving to pin no. 45
3) EDIS Module pin 2 (blue/yellow) may now be disregarded as it is not used by the 0FAB ECU (pin 28 on ECU).

MAP Sensor re-wire:

At the MAP sensor multiplug...
1) Move the brown wire (gnd) to cossie MAP sensor pin no. 1 (marked on multiplug).
2) Move the brown/trace* wire (feeds back to ECU on pin no. 26) to cossie MAP sensor pin no. 2
3) Move the brown/yellow wire (feeds from pin no. 27 on the ECU) to cossie MAP sensor pin no. 3
4) On one of the Cossie MAP Sensors fixing holes there is a metal ring which goes into the sensor. This ring must be earthed, and when you mount the Cossie map sensor using the right brackets, it connects to earth. (You should only ever mount the Weber/Cosworth MAP sensors with the vacuum pipe pointing downwards).

OFAB to OFAC

Revert back to (OFAC) with these pin changes on the MAP Sensor. These changes assume you have the MAP sensor sitting with the part code (stamped in the side of the sensor) and plug locking latch facing you.

1) Move Cossie MAP pin no. 1 to pin no. 3 (brown).
2) Move Cossie MAP pin no. 2 to pin no. 1 (brown/trace*)
3) Move Cossie MAP pin no. 3 to pin no. 2 (brown/yellow)



* brown and trace denotes any colour trace as i have come across many colours but usually it is either a green or a black trace.

Wazzzer

you can convert the loom to either OFAB or OFAC with the pin swaps

The info is fiestaturbo.com somewhere...

*skeld beat me to it as I'm too slow at typing*

CraigN

didnt know that :blonde: