Ms2 Mk2 into Mk1

[Samk1Mx5]

I have bought a supercharger kit with the intent of running it on my car. My car is a late (97), 1.8 car and the Ms2 has come off a late Mk2. The ecu is an MS2 extra PnP obviously configured to fit the Mk2 loom. Both ecu's are 3 plug also. What i am looking for is any information about for to change the loom from the Mk2 setup to the Mk1 setup. I called a company (MsTuning) and i was informed that it may be just a few wires being the 12V live and igniters or the coils ( i cant remember what was said).

So these are my questions,

How different are they?
How difficult is to to change the Mk2 loom to the Mk1?
What needs to be moved where?
Is it worth doing?

Any help is greatly appreciated as i realistically need it working by the end of this week!

Cheers!

[hybrid]

Find a wiring diagram for both models and compare?

[slow_hemi6]

Probably best to ask about the wiring differences on a specific website or user group for your car. They usually have the wiring diagrams.

[Samk1Mx5]

Managed to find a few diagrams and make up a bit of a fitting. The car wouldn't start though. It would crank and there was fuel but we weren't getting a spark. I do sadly have a list of things I will send to see if you can come up with an idea or two.

The tps was constantly raising
Coolant temp sens was going wild
Afr was searching
The spark table was searching
There was no IAT plugged in

Any ideas at all?

[rickb794]

The TPS is not wired right

You must have a good coolant sensor reading or the motor will likely not run as this is a major part of the fueling calculation.

AFR is not worth looking at until you get a stable system running.

Spark table highlighted cell will move around with the current load state and RPM.

IAT signal must be present as this is a big trim factor in the fueling calculation.

http://www.msextra.com/forums/viewtopic ... 01&t=65757