Background:
Was told that the MSD 8956-1 would not need to be modified. Sent it in TWICE to MSD and was told it should work. This is the DIS unit

First Pic.
This is the location of the wire #62 Tap. I have checked the wire for continuity and it is ok. So in other words I know the connection is good

 

This shows relay that I am using and the actual layout of the relay

 

Notice Light on Zex unit when I manually Ground out Pin 85

 

Shows that I have cut the gray wire as indicated. This damn thing is about to drive me crazy. Am I missing something here? I have a 3000rpm and 6200rpm chip in the unit. I start the car and rev up in the 4000rpm range, nothing happens. Could the unit not be seeing good info from wire #62? The car runs great. Any info would be helpfull....

 

Do you mean your trying to spray when just reving the motor? Or do you mean when your driving? Do you have a wot switch? Sorry I just need some clarification first. I dont have a zex kit just a nx kit so I might not be able to help much.

--Josh

 

…I haven’t gotten to the spray stage. Yes, the zex is a WOT switch. I was just showing in the pic if the yellow wire off the unit would provide a ground the zex box would come on. I think the only thing different in mine and your install is that 87 off the relay is going to your no2 solenoid and not the zex box…All I am doing is reving into the 4K range and expecting the relay to trip from 87a to 87 if the unit is providing a correct ground...

 

so, does the digital rpm switch from msd work without these problems?