I have the Delteq Opti-Direct. I have been hung up on how to retard my timing for some time. This system has no way to retard timing directly. My question is can I still use an ignition box like Mallory 685 and if so what wiring schematic do i use to install? Where do I get the required signals for the box? Not sure what system to follow when setting it up; late model GM HEI/EST system, magnetic pickup distributor system, crank trigger ignition?

 

You need a MSD DIS 4 box and converter modules. That will give you everything you need and then some. If your interested, i have one all wired up and ready to go on. I had the delteq system on my car but my delteq converter box died. I am now switching to the LTCC setup.
Let me know if your interested.