My friend had an SS lude. He killed that thing just running hard. Not sure if it was perhaps a defect but they attributed it to him racing and even made him pay for it.
I think this is of course worse case scenario , and probably a really bad move by the tech's and dealership but hey.....if it can happen n/a im sure it wont help much with nitrous.
Also if you plan on getting a system and just always hold the pedal down , when the nitrous on most systems always runs at full pedal , this will really make for hard shifts and I bet would wreck your tranny , if you the kind of person who takes his foot of somewhat during the auto-shift to help soften the shift....you might be ok.
If you the guy who plants his foot to the ground like it were made of lead.....then dont waste money on that now. Go MT , and go from there.