E.F.I CONVERSION?
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PassionFord Post Troll
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From: SOLIHULL (BIRMINGHAM)
What,s better/advantages to using FIESTA OR COSWORTH MANAGEMENT.I know on COSSIE MANAGEMENT you keep the dizzy,but not sure about loom.Am basicallly looking for the EASIEST or CHEAPEST and MOST EFFECTIVE WAY of getting rid of M.F.I. Have heard of people converting from anywhere between £400-£1000.Your views or conversion costs PLEASE.
It's well easy. Can be done for peanuts. Buy a Mk4 EFi XR3i and get all the stuff you need from that.
Then get hold of an OFAC/OFAB ecu and map sensor from a fez turbo, an inlet manifold adapter plate and a sierra 1.8CVH CPS sensor and your singing and dancing. Then break the rest of the 3i and recover your costs.
Then get hold of an OFAC/OFAB ecu and map sensor from a fez turbo, an inlet manifold adapter plate and a sierra 1.8CVH CPS sensor and your singing and dancing. Then break the rest of the 3i and recover your costs.
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i have all the bits from my xr2i that i broke, are these any good?
i am thinking of going efi but cost is an issue. i have:
inlet manifold
injector rail
loom
head
flywheel
most sensors and injectors
i am thinking of going efi but cost is an issue. i have:
inlet manifold
injector rail
loom
head
flywheel
most sensors and injectors
Originally Posted by radiant red
i reckon the cone filter will be used on 99.9%
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PassionFord Post Troll
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From: SOLIHULL (BIRMINGHAM)
Originally Posted by Rab
It's well easy. Can be done for peanuts. Buy a Mk4 EFi XR3i and get all the stuff you need from that.
Then get hold of an OFAC/OFAB ecu and map sensor from a fez turbo, an inlet manifold adapter plate and a sierra 1.8CVH CPS sensor and your singing and dancing. Then break the rest of the 3i and recover your costs.
Then get hold of an OFAC/OFAB ecu and map sensor from a fez turbo, an inlet manifold adapter plate and a sierra 1.8CVH CPS sensor and your singing and dancing. Then break the rest of the 3i and recover your costs.
1.How much loom do i swap,is it just the ENGINE LOOM and do i need to take the DASH out?
2.I here you have to MACHINE the crank pulley from a 1.8 sierra. to make it fit.
3.Did you encounter any problems in doing the conversion,modding the wiring plug E.C.T.
I don,t want to start a conversion until i know what,s involved and what to look out for.
CHEERS.
Too many posts.. I need a life!!
Joined: Sep 2005
Posts: 673
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From: barnsley, south yorkshire
you will need..
efi inlet manifold complete with injectors and injector loom
coil pack
cps sensor and/or trigger wheel depending on your block
xr3i/festa turbo loom
ofab or ofac ecu
fuel and injector relays
adapter plate if u are using a mfi head
efi flywheel.
you will need all the sensors for the loom, i.e map sensor, tps, iat etc..
efi inlet manifold complete with injectors and injector loom
coil pack
cps sensor and/or trigger wheel depending on your block
xr3i/festa turbo loom
ofab or ofac ecu
fuel and injector relays
adapter plate if u are using a mfi head
efi flywheel.
you will need all the sensors for the loom, i.e map sensor, tps, iat etc..
Originally Posted by davsmith64
you will need..
efi inlet manifold complete with injectors and injector loom
coil pack
cps sensor and/or trigger wheel depending on your block
xr3i/festa turbo loom
ofab or ofac ecu
fuel and injector relays
adapter plate if u are using a mfi head
efi flywheel.
you will need all the sensors for the loom, i.e map sensor, tps, iat etc..
efi inlet manifold complete with injectors and injector loom
coil pack
cps sensor and/or trigger wheel depending on your block
xr3i/festa turbo loom
ofab or ofac ecu
fuel and injector relays
adapter plate if u are using a mfi head
efi flywheel.
you will need all the sensors for the loom, i.e map sensor, tps, iat etc..
also you will need a 90 xr3i throttle cable and pedal
Originally Posted by mercury grey minter
Originally Posted by Rab
It's well easy. Can be done for peanuts. Buy a Mk4 EFi XR3i and get all the stuff you need from that.
Then get hold of an OFAC/OFAB ecu and map sensor from a fez turbo, an inlet manifold adapter plate and a sierra 1.8CVH CPS sensor and your singing and dancing. Then break the rest of the 3i and recover your costs.
Then get hold of an OFAC/OFAB ecu and map sensor from a fez turbo, an inlet manifold adapter plate and a sierra 1.8CVH CPS sensor and your singing and dancing. Then break the rest of the 3i and recover your costs.
1.How much loom do i swap,is it just the ENGINE LOOM and do i need to take the DASH out?
2.I here you have to MACHINE the crank pulley from a 1.8 sierra. to make it fit.
3.Did you encounter any problems in doing the conversion,modding the wiring plug E.C.T.
I don,t want to start a conversion until i know what,s involved and what to look out for.
CHEERS.

Have a look on craig's topic for my diagram
https://passionford.com/forum/viewtopic.php?t=220964
This is for wiring up the fuel pump and relays for the EFi.
https://passionford.com/forum/viewtopic.php?t=220964
This is for wiring up the fuel pump and relays for the EFi.
Too many posts.. I need a life!!
Joined: Sep 2005
Posts: 673
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From: barnsley, south yorkshire
ohhhh yeah,,
so u do need to change the cable and pedal as i need to change it as i have done the efi conversion to my ERST,,,
heres a few pics of it converted..
so u do need to change the cable and pedal as i need to change it as i have done the efi conversion to my ERST,,,
heres a few pics of it converted..
Thread Starter
PassionFord Post Troll
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From: SOLIHULL (BIRMINGHAM)
Are we all agreed that
1.MK4 ESCORT XR3I E.F.I
2.MK3 FIESTA RS TURBO.
3.MK3 FIESTA XR2I
All have EXACTLY the same INLET MANIFOLD,ENGINE LOOM AND COIL PACK....Basically i want to get as much parts as i can from XR2i or xr3i.Are the only FIESTA RS TURBO parts i need..
1.E.C.U.?
1.MK4 ESCORT XR3I E.F.I
2.MK3 FIESTA RS TURBO.
3.MK3 FIESTA XR2I
All have EXACTLY the same INLET MANIFOLD,ENGINE LOOM AND COIL PACK....Basically i want to get as much parts as i can from XR2i or xr3i.Are the only FIESTA RS TURBO parts i need..
1.E.C.U.?
Too many posts.. I need a life!!
Joined: Sep 2005
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From: barnsley, south yorkshire
mo u will need the matching map sensor for the ecu aswell,, i.e if u get a fiesta ofab ecu u will need an ofab map sensor,,
also if u use a xr2i inlet and sensors u will need to change the act sensor for a frst one as it will give a false reading to the ecu and make the car run incorrectly..
also i dont know if this has been pointed out, if you do use a xr3i loom u will need to make a few changes to it to run the ecu on ofab..
but if u use a OFAC ecu it should just plug in and run the car..
and also u will need a edis4 module and when u do get one make sure u cut pin 2 out as it is not needed..
if u need anymore help give us a shout..
also if u use a xr2i inlet and sensors u will need to change the act sensor for a frst one as it will give a false reading to the ecu and make the car run incorrectly..
also i dont know if this has been pointed out, if you do use a xr3i loom u will need to make a few changes to it to run the ecu on ofab..
but if u use a OFAC ecu it should just plug in and run the car..
and also u will need a edis4 module and when u do get one make sure u cut pin 2 out as it is not needed..
if u need anymore help give us a shout..
Thread Starter
PassionFord Post Troll
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From: SOLIHULL (BIRMINGHAM)
Originally Posted by davsmith64
mo u will need the matching map sensor for the ecu aswell,, i.e if u get a fiesta ofab ecu u will need an ofab map sensor,,
also if u use a xr2i inlet and sensors u will need to change the act sensor for a frst one as it will give a false reading to the ecu and make the car run incorrectly..
also i dont know if this has been pointed out, if you do use a xr3i loom u will need to make a few changes to it to run the ecu on ofab..
but if u use a OFAC ecu it should just plug in and run the car..
and also u will need a edis4 module and when u do get one make sure u cut pin 2 out as it is not needed..
if u need anymore help give us a shout..
also if u use a xr2i inlet and sensors u will need to change the act sensor for a frst one as it will give a false reading to the ecu and make the car run incorrectly..
also i dont know if this has been pointed out, if you do use a xr3i loom u will need to make a few changes to it to run the ecu on ofab..
but if u use a OFAC ecu it should just plug in and run the car..
and also u will need a edis4 module and when u do get one make sure u cut pin 2 out as it is not needed..
if u need anymore help give us a shout..
Thread Starter
PassionFord Post Troll
Joined: Dec 2005
Posts: 3,175
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From: SOLIHULL (BIRMINGHAM)
Originally Posted by Rab
An XR2i will provide EVERYTHING you need except, the ECU, Map sensor and CPS sensor.
And obviously the adapter plate for the inlet.
And obviously the adapter plate for the inlet.
Originally Posted by JamboRST
what airbox do you use when going efi?
Originally Posted by mercury grey minter
Cheers RAB Do i get the CPS sensor and pulley. from any 1800 cvh sierra?Also what needs to be done to the pulley to make it fit.?
All help appreciated
All help appreciated

Originally Posted by Rab
Originally Posted by JamboRST
what airbox do you use when going efi?

Originally Posted by JamboRST
Originally Posted by radiant red
i reckon the cone filter will be used on 99.9%
Originally Posted by JamboRST
Originally Posted by Rab
Originally Posted by JamboRST
what airbox do you use when going efi?

You should have seen how I ran it at first


In the end I shifted the battery and put an ERST airbox in it's spot.
different people/companies have different theories to completing this conversion, some are shocking to look at. i followed janos theory on this. i was thinkin bout doin it, so looked on his website and forum and it proved to be more than helpful. im not gona give much away incase theres bits that he dont want people to know about, as u can prob understand. here is pic of my engine. my throttle cable is a normal escort rst item. ive heard a escort mk4 automatic item is better as its alot shorter, but no one could find me one




i must add, i cant recommend this conversion enough. using a cossie 2wd engine loom and then just taping up what wasnt needed from my escort turbo loom, an jus puttin it bundled up behind the heater box. i could have chopped it all off, but didnt wana ruin a perfectly good,never been cut escort turbo loom, incase i ever decided to break the car for spares. another way would be to get a escort mk4 base model engine bay loom to use with the cossie loom, coz this wouldnt have all the ecu wiring etc.
hope im being helpful here and not just rambling on lol
hope im being helpful here and not just rambling on lol



