01 auto. Mild mods. Stacking issue

2001 Cummins 4x4 auto trans( not build yet).
Has 63mm turbo
Air ram intake
5" exhaust 8" tip
150 raptor lift pump
Edge juice with additude comp hot unlock. 7 levels
I recently learned about stacking with programmer and tuner.
But for some reason, I can't use level 6 and 7. I did some research and from what I understood it is defeuling.but my question is, why is it doing that? I have the smarty s03 and on level 8 which is catcher without timing. Alittle help guys. At least to understand why it does that
.