wiring 1zz coils to AEM EMS V1

survyor2

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Jun 19, 2005
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West Palm Beach, Florida, United States
I've probably read dozens of threads on running the 1zz individual coils on aem ems and I can't seem to get a straight answer to my question. Seems to be because there are so many different setups and so many different opinions.

I understand the 1zz coils have 12v, ground, trigger. 12v and ground are obvious. Is the trigger wire run directly from the aem ems to each coil? I have the wiring diagram for the aem ems. I see outputs for COIL1, COIL2, and COIL3 at 18A, 19A, and 20A. Do I run a pair of wires out of COIL1 for 1zz #1 and #6, etc? I also see AEM EMS outputs for COIL4 and COIL5 at 5C and 6C. There is also a spare coil output at INJ10. Can I use that for the 6th coil?

Thanks,
Dennis
 

toyotanos

What will we break today?
Staff member
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Nov 29, 2008
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Coon Rapids, MN
I run the coils wasted spark without any issues up to 7800 rpm.

12v and ground are easy.
IGT is the signal directly from the AEM EMS. I wire partner cylinders together to get wasted spark.
IGF is unused and I use pin plugs to keep the connector watertight.
 

toyotanos

What will we break today?
Staff member
Super Moderator
Nov 29, 2008
2,841
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Coon Rapids, MN
Pretty much. You do have to turn off the multiplex ignition option in the AEM software, though. You also have to make sure your ignition phasing is correct, depending on the way you wire it up, but that's pretty simple.