Ok, this is the second box I have used. Both of them have had the same affect. When connected and armed, the voltage on my TPS advance drops. So to put it in basic terms I'm running lets say 20-22 degrees of timing. I arm (but not activate) my progressive controller, and my timing drops to 5-18 degrees of timing. I turn the unit off, and my timing jumps back up to 20-22. I have it connected to the green (falling voltage) on the TB. It will kick on fine and activate the unit, but the timing is being affected big time. I thought maybe it was just a bad TPS box that I got from NX, but wasnt sure, so I figured the FJO progressive controller would fix it, apparently not. Heres the HP tuners data log, just at idle to show the spark advance drop.