Apparently the internal coils are unreliable..well it is on the MX3 as mine broke it has also reported to have better gains, and produced alot better spark on my car

keeping in mind the MX3 V6, ford probe and 323 V6 are the same, this mod will work on the MX3...

this converts the existing dizzy to an external coil and modulator

what you'll need is one of these..

http://www.fordprobestore.co.uk/store/p ... 4d53cbfe72

this is the modulator!

first you'll have to change the distributor to accept an external coil and disable the old one, to do this you'll need to do this..

firstly remove the distributor, then dismantle it so you can remove the old internal coil, take the coil out of the distributor, next you'll need to cut of the old coil signal, its not necesary as you took the old coil out, but i did it just to make sure!

remove the circled metal strip


next, you have to make someway of getting power through the distributor, in the states they use an "MSD power tower" as shown...

i simply got an old spark plug and broke the white part off leaving the connector and metal rod, i then put a thread on it, i then drilled a hole through the dizzy cap and put a thread in there and attached a nut to the end, this picture shows where the hole goes through, it has been covered with silicone to stop the current shorting



the other siliconed hole is where the old rod came out and went into the coil, snap this off and cover it with silicone.

thats the hard part done.

next take the modulator and follow this dodgily but well working diagram, as followed by me!



on the 3 pin plug the top wire goes to the positive on the external coil
The second pin is for the rev counter, you need to connect it to the negative on the external coil, BUT you need to put a 1000ohm resistor in it to stop the rev counter being killed.
The last pin connects to the negative on the external coil.

The bigger plug only has one wire adjusted, this is signal wire to get the modulator to run, cut it off completely and connect it to the G in the picture...just do what i did and put the modulator the way it is in the diagram and follow

heres some important info you should follow..

1.the Modulator should be placed flat against a metal surface and the thermal paste used, otherwise the modulator will overheat
2. people have used many different types of coil, a performance one would work fine, i used an MSD master blaster coil, available from demon tweeks for around £40
3.you need thick enough wire for it to work right and not melt etc, guage 16 minimum has been recomended, i used the thick speaker cable available from argos

here are some pics of my layout, the plate of the bottom of the cd-rom is a temporary measure





this might also be a useful mod for the KL-ZE engines with external coils etc

if anyone needs help with this, or wants a loom making up id be more than happy to help...obviously making the loom there would be a charge

i had this mod on my ford probe (2,5ltr V6) and it works.
and i know it also works on a KL-ZE engine but the wirecodes are different.

i used a
Wells DR100
blaster SS coil PN 8207 http://www.msdignition.com/coil_blaster_6_8207.htm

centre cap. for on the distrubutioncap.
Wires
soldering iron
tape and a drill

i`ve written a how to for the probe but it is in dutch.


and i have the fealing it is better then the factory unit.

yep, the wiring colour is different, but its in exactly the same places

I have just done the HEI mod to my disty as my ignition module has gone bad. Anyway it was my second disty so I have decided to do the MOD as per Joe Bialy (probetalk) recommendations.

Initially I was not having much success when I followed the steps in following link:
http://www.clubprotege.com/wil/howto/hei/index.htm

Apparently Mazda has switched the tacho and -Ve ignition wires around in the 3 pin connector.

Anyone who is interested in this MOD please PM me.

By the way, the car's response is much better with HEI MOD.

Lantis/323F

Quite keen to do this, however on the plug with 3 wires I only have 2(the top one on the diagrams above is missing!!!!) please help

Somebody still has the diagram for the BA kf engine? I only have 5 wires for the 6 wire pin and 2 wires for the 3 wire pin. Thanks

It must be, i used the original engine loom and the dizzy from the KF (the KF34 dizzy)

So if this works on a normal 2.0 this will also work on the ZE

Can ypu draw a diagram of ypu wiring? Thanks