kermitt

Am going aftermarket (not OFAB/OFAC) as per title whats the easiest one to fit yourself when going from MFI to EFI?

I have the block with the hole for the crank position sensor already (which is being rebuilt) and an EFI head but nothing else yet so gonna start collecting more bits i.e

EFI flywheel,
EFI inlet & TB hopefully with as much with it as poss,
XR3i accel cable & pedal
New injectors
Fuel pipe from filter to rail
Zetec coil pack (which one?)

What else do I need apart from the management ECU and loom?

Was planning on fitting the EFI flywheel when I get the block back and build it up on MFI first so that I can at least use the car while I source the extra bits I need.

cheeRS

juffer

For a cheap reliable setup that can be done in your own garage and then setup by yourself i would recomend megasquirt. Have a read here https://passionford.com/forum/ford-e...quirt-efi.html and www.extraefi.co.uk

Rob_DOHC

iTrader: (4)

I agree with juffer,

If you get the EFI inlet AND inlet loom every thing you need (practically) is on one plug. You will need extra wires for cps, lambda, ignition live, perm live but i think thats it can't remember with out the wiring diagram in front of me.

If you speak to Karlos, as he seems to be the man for MS he maybe nice enough to email you a base map so you can get your car running.

Rob,

Karlos G

iTrader: (4)

1223456

I would recommend the M-tech v4, its very simnilar to megasquirt except it is pre-built and comes with a warranty although there are other companies building megasquirt ecu's as well. Then all you will need is a Xr3i loom and away you go.

kermitt

thanks guys will have a look through the MS stuff later as there is sed loads to read lol.
Have found a local guy who has loads of bits available, is there anything other than my list so far that I will need.

+Xr3i loom

Is there a way to tell if it is indeed an EFI XR3i loom?

Rob_DOHC

iTrader: (4)

You don't need an xr3i loom mate, if anything that will just really complicate your life.

Rob,

Karlos G

iTrader: (4)

Yeah I was wondering what it was suggested he needed that for??
None of the engine/ECU loom is used any more, only the lighting, E/W, C/L, E/M, etc. is retained, so leave the MFI loom were it is.

1223456

only reason I suggested that is because you get all the sensors pre-wired, I can get these looms in mint condition for Ł30.00, for my conversion im stripping/binning all the loom which I dont need such as the lights, ancilliaries etc like you say and retaining the main engine loom. The edis is binned and the main sensors seperated and cut near the ecu conection plug. I am now left with the sensors with a factory soldered full length cable conected to it. All I do now is plug the sensors in, run the cables into the ecu location and join in the ecu harness. For Ł30.00 I thought is was a cheap soloution instead of cutting connectors and reconnecting within the engine bay, this way will keep it looking neat and factory.

This is my first attempt atr something like this so I may be way off with my methods. Im still learning

p.s. KArlos, that injector plug diagram wuill be getting some use this week very useful

Karlos G

iTrader: (4)

There is only the CPS, and coil pack plug that you use in addition to the inlet loom plug but as you say it would mean having full length cable for both those I spose.

I thought it worth putting that up as it does save a bit of time with a multimeter figuring out what all the pins do! Glad people find it useful

1223456

remember he is going from mfi to efi so he will have no injector plugs, ait intake temp sensor (i think) so he would have to source the plugs anyway, the connect them to the wires, but with the loom, he could use the standard ford inlet plug as per your sketch and it would look really neat in the bay, not to mention save time.

Its probably half a dozen of one and 6 of the other

Karlos G

iTrader: (4)

Ah I see what you mean, I assumed he would have that anyway but yeah if not then a XR3i loom would be very handy!

botters

iTrader: (2)

dont bother with efi manifold the mfi one flows better and before anyone starts arguing its a PROVEN FACT with flow benches and proven on many big power motors

1223456

Thats an interesting fact which I didnt know about, but just thinking about it, I pressume this is his first stab at this sort of thing so it may be an easier option to just get a efi inlet. Other wise he could have issues with injector mountings as mfi doesnt have one, inlet not having throttle position sensor etc

As he already has a efi head then its really a case of un bolt the old and bolt on the new

botters

iTrader: (2)

if you use the series 1 mfi manifold then you can unbolt the inlet runners as you can on an efi manifold then just use the efi lower part for the injector holes and a cossie throttle body for the idle speed control valve and tps much better setup than efi fannymould

Karlos G

iTrader: (4)

Aside from extra flow what is the beneift of this over an EFI inelt, as we know that flows enough for 300bhp+ anyway?

botters

iTrader: (2)

you get equal air distribution to all 4 cylinders an efi manifold gives slightly less to cylinder 1 and 4 but yes your right efi will run up to 300+

Karlos G

iTrader: (4)

Thats interesting, so 1 and 4 will always be a bit richer...
But for 99% of us the EFI one will be fine then! lol

botters

iTrader: (2)

yeah probably but i always see it as if im going to do something i will use the best components available to me and having all 4 cylinders perfectly balanced will produce a more tourqey engine that will inevitably last longer than an unbalanced engine

Karlos G

iTrader: (4)

I supose every little helps!

botters

iTrader: (2)

on a cvh definatley lol us rs turbo owners need all the help we can get to keep the engine in working order lol!

Karlos G

iTrader: (4)

Yes we do!!

Rob_DOHC

iTrader: (4)

It was my understanding the top half of an s1 manifold and the bottom half of the efi manifold didn't line up properly and needed quite a bit of modding... this true? If you have done it mate and have some pictures that would be great!

Rob,