is there any kind of piggy back program/system that I can use to have stock or advanced timing off the bottle but when I engage my nitrous kit if delays timing like the Digital 6 does? I had 2 deg advanced on my last car off the bottle but when I engaged my kit it delayed 4 deg to put me at 2 retard for nitrous.

 

Yes. Timing Tuner. Search for it, I know Ramchargers sells them, and there are a few threads about them, mostly "how do I......" or wiring related. Good system though.