[Gmecm] Piggyback ignition modules

[Andrew Gibson]

Has anyone done a piggyback dual gm ignition module setup? I just tried one while converting my chev truck and the pickup coil will not provide enough juice to run the module for spark unless the one to provide signal to the ecm is unplugged from the pickup coil. Once running and plugged back in the truck runs fine.
   
  Since I know this is going to be asked, I am running the 2.5L tech4 injection on a 250 cid inline 6cyl. Hooking up the EST is planned for the future, but not until I get the timing tables sorted out. (Disributorless ecm on a distributor system)

		
---------------------------------
Yahoo! Mail
Bring photos to life! New PhotoMail  makes sharing a breeze.