Has anybody succesfully installed MSD's DIS 2, 6A or 6A-L on the trailing coils to a second generation Rx7 using the factory igniter and factory ecu? I have tried and gotten no resutls. The MSD works fine for the leading coil but I can't get them to work with the trailing coils using the factory igniter. What I am getting is spark during crank out of all 4 spark plugs but when the engine kicks over the trailing plugs shut OFF. I was on the phone directly with a tech from MSD and he could not figure it out. WE talked about everything. I falsely triggered the DIS 2 box and the box works fine I check the igniter and that was fine, check coils and that is fine. The problem is the trigger signal coming out of the factory ingniter is not triggering the MSD box when I release the ignition key. The tech at MSD told me they only did a ground test while cranking to the second gen models they tried the box ON and saw spark while they did the ground test. but the problem is after the car is running the trail plugs shut off.

 

you need 2 of them for starters. one for each trailing coil. (so 3 boxes total) should work fine.

 

I have tried 3 boxes one per coil and that did not work. later I called MSD and they said the DIS 2 would work for the trail coils. The DIS 2 is one box with two channels and no luck. Don't think i haven't plyed with msd's before. This is a problem that seems to need a little research.