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Ecu Pinouts 1.8 Eudm Mk1 '94

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3.4K views 10 replies 6 participants last post by  Low Ender  
#1 ·
As the title states, I'm looking for the ECU pinouts of the European early 1.8 MX5. I've found the ones for the Miata and the Eunos Roadster, and some comments that the European ECUs are different, but the exact difference is unknown thus far.

I'm asking for this because I received a Megasquirt-2 with some problems and a 1.6 wiring loom (might even be for a Miata), which I both have to check to find the problem (which is not getting a good rpm signal).
 
#3 ·
I'm not sure what your asking. The 1.6 loom isn't going to work with a 1.8 is it? Different air flow meters, ignition system...

Your starting from scratch, so are you saying you can't find a diagram that matches your car? Or you just looked at some posts and lost the will to check?

Perhaps speak to rev about sending it back for modification. I believe he makes them plug&play. Usually he provides them but he may mod one. Then your time is better spent at work getting paid to drink tea, so you can pay him rather than hurt your head.
 
#4 ·
I'm sorry, it is not a pnp so there is a 20 inch loom that connects the ms2 to the wiring harness of the car. That loom is now for a 1.6 and should be modded for a 1.8.

The thing is that a lot of people say the pinouts are different for EU cars compared to US or JDM, but no one seems to have a wiring scheme of an EU MX5.

As far as getting paid goes, I'm a student so my time is pretty much free.
 
#6 ·
Hi all. First time post, just came across this site. I happen to be doing almost the exact same thing (wiring an MS3-PRO into the stock harness) and ran into the same problem of not being able to find the EUDM pinout diagram for a 94. If anyone has it on hand and would be willing to share it would be much appreciated!
 
#7 ·
Have you tried sending a PM to Reverant on here? He builds Megasquirts for EU and JDM cars of all years '89-'05 so he should certainly know what the difference is between a Japanese and European '94.
I tried him after you suggested it, he basically told me to fuck off if I wasn't buying one of his ECUs, even though I offered to pay for his pinout schemes.