Hello..

Is it possible to take the ECU from the Fiesta RS Turbo and just mount it on my CVH Efi (EEC-IV)? I have 4 VW Golf 4 GTI injecters that i could mount.. They are around 249 ccm.. So pretty much the same as the 701 injectors, that I have read sould be fitted with a stage 2 chip. Found a Fiesta RST ECU with a SuperChips 195 hk chip on ebay and thinked to use on my escort and run 0,5-0,6 bar and ~160 hk..

Have a KKK K16 turbo, a RST manifold and a intercooler and alot of extra things.. I just need a cheap solution to run moderate boost on a efi engine. My first turbo-project so would nice to be cheap.

I have looked at Megasquirt + the adaptor board, but its cheaper using a Fiesta RST ECU..

Sorry for bad english..
Greetings
Jesper Andersen..

 

yes and no, theres more to it.
get the ecu first, it will have 1 or 2 codes on it, OFAC or OFAB, the engine loom that connects to the ecu must be the right one for the code on the ecu, something you have to take the word of, of the seller if on ebay, but the difference between the OFAC and OFAB is a few pin locations which can be moved, or you can conver the xr2i engine loom to suit the ecu.

also the injectprs you use must be right for the ecu running them, i forget the word im looking for but some injectors will not work with the FRST ecus, like cossie injecotres for example, they cannot ne used with FRST ECU so check the injectors you have will work, i would say but i am unsure tbh mate.

you will also need the map sensor to suit the ecu, again OFAC ior ofac and OFAB of ofab, but cossie one can be used if using ofab.

and fianly you will also need the turbo ACT (actual charge temp) sensor, if you dont, it will run like toss

 

The wiring loom is included so should fit.. Have looked at the differents in wiring and the almost none. 1) The driving speed sensor goes to pin 4 on fiesta and pin 3 on my escort.. Easy fix.. 2) There is a thing on the fiesta wiring diagram that my escort dont have. Co measure of some kind.. Need to find out what that is, and if it can drive without. But other than that there shouldnt be any differencies according to the wiring diagram..

According to the auction page the ECU is a Ofac.. It looks like the map sensor is included..

And for the injectors I read i page on fiestaturbo.com that said that 701 injectors should be used with a stage 2 chip (195 hk).. The ones i have are also high-ohm and nearly the same size (240 ccm vs 249 ccm)..

Do you have a link or picture of that "ACT (actual charge temp) sensor", where is it fitted original?

 

If u need an ofab ecu for the loom then i have a working one that is open to offers? ? have got a complete ofab wiring loom with an ecu aswell its a bit tatty but all works as i have it on the car at the mo, is being removed this weekend if ya interested email this wkend and ill send ya a vid of it running so ya no it wrx!

 

im a reg user of FT mate and didnt see your post on there, was it new ish post?

there is more than 1 pin change when convering ofac to ofab, how ever now i see where your coming from, you have i take it a EFI cvh in a escort yes? if so to convert the engine loom to run ofac there is more than 1 pin change, and if you have EFI on the escort you should have the co2 adjuster on there, this is norm mounted on the plate with the EDIS but being a escort im not sure where it should be.

i do have a pic of the sensor

this is the co2 adjuster



this is the frst ACT sensor which is mounted in the right hand side of the inlet

 

Sorry but i'm a little confused with all that OFAC and OFAB talk.. My car is a Escort '91 CVH EFI with the EEC-IV ECU and EDIS system.. Have some old pics of the engine-compartment..




Is my current ecu the ofac or ofab or is it only the FRST ones that is called that? Sorry for dumb question, just trying to figure out if it will work..

As for the ACT is it the same threading? Just remove the old air temp and mount the ACT? The wiring system is included so i could cut the connecter and solder together...

I just thougt that the wiring system were nearly the same os mine og just could change the ecu box... As I have understood it isnt?

 

no, you will run a different ecu, prob the same as the 2i's, off hand i cant think of any codes for them but ofac and ofab is the code for the ecus used, and is only for the frst, no other EFI car uses them, escort or not

i cant see the co2 adjuster anywhere in them pictures mate

as for thread sixe for the ACT sensor, the sensor it self is a different thread, but ford fit a adaptor to make it fit, i.e if you buy a brand new sensor the adaptor is already fitted, so a s/h one should come with it too meaning it screws into the inlet with no other mod needed, and yes, the plug to the sensor can be cut off and changed to suit the frst sensor, which is a bosch sensor so can be got outside of ford but will not come with the adaptor and fords do not sell the adaptor on its own the sly fuckers

 

Ok, many thank for you to take the time to explain it to me.. But if i fit the ACT from ford and change the plug and mount the co2 meter then it should work? I have bid on that ecu with stage2 chip - what should ca be worth? The bid is 60 pounds now.. Would be a nice solution instead than megsquirt, its cheaper and easier and already programmed.. Shouldnt be any problem running 0,5 bar even tho its a chipped ecu? To unchip is just remove the expansion chip from the j3 slot and then its std?

Just cant understand that about the wiring system because they looks to use the same plug for the ecu and coil and so on.. It cant work together with the frst ecu and my efi wirings?

Just wanna to be sure before i win the auction..

 

yeah, change the plug to suit the ACT and thats fine, mount up the co2 sensor, although as said you should have one somewhere, but for this part yeah thats right mate.

the ecu your bidding on, tbh, it prob wont stay at £60, i sold a OFAC ecu and engine loom out of a FRST for a mate for £140 inc post, but on ebay it would of got at least £20 more, so yeah its worth bidding on, but watch the chip, it may not work, on the other hand it might, thats a guessing game with s/h chips tbh mate.
and yeah to remove it you put pull it out the bottom of the ecu.
0.5 bar (7psi) is fine.

as for the engine loom (wiring system you said) the plusg are the same, and will fit the turbo ecu etc etc, but, the difference is where wires go in that plug, to be honest a good 90% of the wires stay where they are, and its just a few that have to be moved, not all the sockets in the ecu plag are filled so its just a case of takeing one connection out of one socket and moving it to the socket needed for the ecu used.

for example, lets say a sensor wire on the escort is in pin number 20, this is right for the ecu your using, not on the frst ecu, lest say for that sensor the wire has to be in pin 30, you take it out, move it to pin 30 and jon done.

corse, there is more than 1 wire that needs moving and if you plan to run a amal valve you need to put new wires in from the ecu plug as non turbo EFI cars dont have a amal valve, but again its a case of putting them in the right numbered socket for the given ecu used.

so in short, the engine loom that connects to all your sensors etc can still be used with the rubo ecu if you move a few wires about on the ecu plug, and seeing as you basicly have a xr2i set up i would imagine the pin changes needed would be the same, i have never converted a escort EFI engine loom so cant say from first hand but a friend has im sure, but i will post up the details need to convert looms to the given ecu etc and hopfully you could work out what would need to be done to make it work with what ever code of ecu you win.







These pin changes alow you to run FRST management without an Amal valve, if you decide to add an amal valve for a reason you will need to take a pin out of a scrap EFi Ford ECU plug and run a wire from one side of the new AMAL valve to ECU pin 33. The other side of the amal valve plug goes to a good earth point or any plain brown wire.


Converting an 8v 2i loom to OFAB

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).

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).


Converting an XR2i loom to OFAC

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).


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.



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.

 

What are the EDIS pin 3? You mean the little 8 pin boks that translates the crankshaft signal to the ecu or something? That one over in the side of engine compartment.. Then there no lambda sensor but only the co2 adjuster..? Is that to adjust how rich the engine runs throuh the rpms or just at idle?

But many thanks for your description, it rocks!!

Grettings
Jesper Andersen

 

yes mate its on the edis modle plug i belive.

the co2 adjuster is that yes mate, it can make a difference to the running of the whole engine through driving, not a great deal but a bit, i remember when i went fot a rolling road many years back and they said my fuel pump was fcuked and it was running lean, he adjusted the co2 adjuster a bit and it ran a bit better on the way back, course i fitted a new pump and it was like a new car
but tbh, dont adjust it your self, although i guess with a gas tester hanging out the exhaust it might be possible but i tend to leave that sort of thing to the pros, its not worth me doing damage or something.

 

Won the ECU and loom for 208 pounds.. Dont hope it was not to much for it.. Saw a OFAB ecu (standard) that ended on 170 pound so not that much difference...

But it should be possible to sell again without tomuch loss? Or did I bid to much?

Just waiting to see if it will work on my escort..

 

i would of said a bit too much, but in saying that prices vary tbh mate

 

Hmm.. Was not the reply i hoped of.. Then theres just to hope that it will work on my escort.. Looked at the superchip homepage.. 900 pounds for the chip as new.. Pretty expensive...

 

no dont look at it that you have paid to much, as i said mate ive seen them go for that amount before.

ive seen a set of mk3 fiesta head lights with angle eye rings fitted inside go for £175 and matey paid up an that was only a week ago if that