Hey guys,

I'm just thinking out loud here, but I need some advice.

(summary of questions at bottom if not interested in background)

Currently I'm building an AU (6 cyl) motor to run in my EF with an EMS 6860 to run everything. I am going to use all the standard EF sesnors and accessories on the AU motor. I am planning on running sequential injection and ignition, so I will need to make looms for this myself.

However,

What if I wanted to use an EL as the base (NL to be exact), rather than an EF?
Now, coil pack and injector wiring I would take care of regardless.
But what about when it comes to the wiring for things like the crank angle sensor (the one that goes in the dizzy spot), sensor on the front of the engine for crank phase (I'm not sure of it's proper name) and any others that I'm not sure about. What do I need to do with them? I figure the best way to do it is to grab an EF loom and work from that.

If I use an EF loom with the aftermarket ECU, am I going to lose any functionality in the NL of things like climate control?

My thought process is an EF pov pack can be pretty much completely controlled by the aftermarket ECU. Standard A/C, no speed sensitive power steering, plus what ever else there is I can't think of.

A high spec EF would still need the standard ECU involved to control some features though yes? By that I mean climate control, tacho, temp gauge etc.

A high spec NL would be the same, yes? So can I go from an EF engine bay loom and adapt to connect to the NL ecu for those same features?



I realise this may be an extremely long, convoluted and disjointed set of questions. I am kinda rattling straight off the top of my head onto the screen. (That's kinda scary, you're starting to see a snippet of how my brain works - messy )


Summary time:

What functions in a stock EF are controlled by the ECU that I would need to keep with an aftermarket one controlling the engine itself?

Are these the same functions that are controlled by an EL ECU, or is there more that I'm not aware of?

To run a coil pack engine in an EL, can I run a full EF engine bay and EF ECU loom?

Or am I better using an EF engine bay loom and adapt to work with an EL ECU?

If I did use a high spec EF ECU (with the engine bay loom and the loom that runs from the firewall down to the ECU only), will I lose any functionality of a high spec EL?



I realise it's an odd set of questions, but I'd really appreciate any feedback from those in the know.


Cheers,
Nic

I would go a complete AU fairmont loom, ECU & BEM etc...

Benefits you get are sequential EFI....
The BEM niceties like wiper delay, light delay etc etc

Just need a AU BBM, coilpack etc and then you can Flash tune the car for any addons etc

hmmm..
if your running the ems as a piggyback, you can use the ef crank sensor to supply the pip signal to the ems, you can use the cas (cam angle sensor) as the sync sensor for the sequential injection, you can also use the ef ecu to ignite the coil packs..

if you use it in a el configuration or the ems as stand alone running coil packs, you will need coil igniters to run the coil pack as the ems ecu's dont have inbuilt igniters..

Thanks for the quick responses guys.

AU99.
That's an idea. Would an AU ECU and BEM let me control the EL A/C, dash and so on? (How many acronyms can you get in one setence? )

Oh and, no need for a BBM either which way.


Troy.
I imainge it would be easier to run the ECUs in parallel to keep the majority of the functionality of the base car.

I was planning to use igniters on the EF anyway. I hadn't realised that the standard ECU could be used. Although, that would give me a batch fire system like stock though wouldn't it?



Thanks guys. I think, while writing, reading and writing again, I think I know how I would best go about it. I would probably get an EF engine loom (up to the firewall connectors to the ECU) and chop and dice that until I get a custom loom that splits between the two ECUs as needed.

Would take a bit of work, but would probably be the best result with less compromises. I think...

Summary time:

Q) What functions in a stock EF are controlled by the ECU that I would need to keep with an aftermarket one controlling the engine itself?
A) ECU can be replaced with aftermarket ECU with no issues.

Q) Are these the same functions that are controlled by an EL ECU, or is there more that I'm not aware of?
A) Yes, except of course the difference of Coilpack v Dizzy/Coil

Q) To run a coil pack engine in an EL, can I run a full EF engine bay and EF ECU loom?
A) Yes

Q) Or am I better using an EF engine bay loom and adapt to work with an EL ECU?
A) No. EF ECU = Coilpack, EL ECU = Dizzy/Coil.

Q) If I did use a high spec EF ECU (with the engine bay loom and the loom that runs from the firewall down to the ECU only), will I lose any functionality of a high spec EL?
A) I believe you should be ok but please double check.

Thanks SWC, appreciate the feedback.


Just to check, (throwing this question out to every body), I have heard/read that the AC will not work with only an aftermarket ECU, neither will the tacho or temperature gauges.

Has anyone got any feedback on whether that is definitely correct or not?



Some good stuff here guys.

A/C can be switched from an aftermarket ECU.
thats not a problem.

I don't beleive the Temp sensor relies on the ECU, Tacho gets its feed from the ECU, however the aftermarket one should be able to give a tech output.

the EF cluster doesn't need complex information to function.

This might have some answers:
ecu-fuel-system-eec-f21/aftermarket-ecu-and-aircon-on-el-falco-t86854.html

Might be wise to search this site using Google advanced - pretty sure there's been previous EMS threads covering some of this.

I know of an ED using a full AU setup...

Do some research but if you can get wiring diagrams for both cars you should be right....
It should run everything ok.. and you can use the AU injectors with are slighly better too....

I would run as much au stuff as you can to get rid of the dreeded dizzy.
Im running an eb1 with au1 and au3 engine it seems to be quite happy.
You will need au1 ecu (smartlock) au3 enginge loom, au3 bbm with sensors, el fan ciruit (keep as much wire on the loom as possible , wires seem to be the same colour).
The earlier bem doesnt seem to like communicating with the au ecu (smartlock bypass will be easier)
some spare time with wiring diagrams.
Im running the ac through the ecu for idle step up.

why on earth would you try and run all of the AU gear if you're not even going to use the AU ECU.
if you've got an AU motor, then you've got access to all the sensors you should need to run sequential through the EMS.

I think people need to re-read the original question.

^^^^^^^^^I was thinking the same thing re putting in AU wiring, etc.

I hope people realise the EF I6's are already wired up for SEFI, so most of that side is already done.

Sorry for the slow response guys.

Thanks again for all the info.

I'm fairly confident with how I will do most of the wiring now. Just gotta grab the EMS and get some time to put it in.


Ray - Silly questions, but I thought the EF I6s were batch injection as with the ignition. I thought the AUs were the first to run sequential injection?

You are right Nick - the EF's have though separate injector lines to the ECU.
I suppose Ford may have intended to run SEFI in the EF's, but there are a range of reasons not - emissions, coil pack reliability, etc. Not sure of the actual reason they didn't.