Need some help, Ltx-12 on a 20b turbo
 

Hello

I'm on to wiring up my motor (20b single turbo) to my microtech Ltx-12 and have a few questions about that.

First of all i want to know if I can use the stock coils together with this ecu, by wiring the trigger cables from the ecu direct to the connector on the trailing and leading coils.

Second, I want to know if I HAVE to connect the ECU together with the fuel pumps, I would like to be able to control my pump by myself by a simple switch instead of wiring trough the ECU. (running two feed-pumps and one pressure-pump)


Is theese two things possible to do? or do I have to buy me a f.eks msd ignition and also connect my ecu on to the fuel-pump?

Just buy 6 bosch coil packs or use 6 mazda trailing coil packs(without ignitors).

Cant use factory coil packs..

Also with the fuel pumps.
Run 3 relays(1 for each pump) and make sure they are all triggered by the microtech and not a switch. Switch is dodgy and dangerous.

so I cant use the stock trailing and leading pack? why two trailing?
I was thinking of connecting the cables from the ECU direct onto the stock coilpack, and also use the trailing pack for trailing and leading for leading.

What is the difference between theese two?

Im pretty sure the factory cosmo leading coil packs are useless. You cant fire them seperately.

The s4/5 mazda trailing coil packs can be fired seperately and are actually a very powerful coil pack..
Im not sure about the cosmo trailing coil pack, it may be like that, Youd know more then i would.

Dont connect the microtech to the ignitors.

Ok, is it possible to test the ignitors by adding 12v and ground in to the coil pack and the put a spark plug and spark-plug wire on to the coil? if it is 12v that is supposed to go into the coilpack

just took a look at this link, I cant figure out if this is the stock coil pack or if it is some aftermarket type.

Ok, is it possible to test the ignitors by adding 12v and ground in to the coil pack and the put a spark plug and spark-plug wire on to the coil? if it is 12v that is supposed to go into the coilpack

just took a look at this link, I cant figure out if this is the stock coil pack or if it is some aftermarket type.
http://microtechefi.com/microtech-wiring.php#1

Did some tests with the stock coil-packs today and i seemes that the are fully useable in the way I was thinking.

On the coil packs, I have 1 4-pin connector except for the three for the spark plugs. One of theese 4 pins is "kind of" sepparated from the other pins with a bigger gap between them, so i connected the positive side of the battery on this one, and the one of the others to ground.
Then i hooked up a spark-plug at where i figured out was the right one for the pin I had used, connected all this to an old distributor i had and then connected up a battery and started on rotating the distributor.

And i got a SPARK.

Getting spark is one thing. whether its firing at the right time and so on is what you dont know. Neither do i. I have never tried doing what you are doing so my experience limits me.
Only way to find out is to try it.