On order is my Kenne Bell supercharger..and on their tune will not turn off the 02 sensors, I'm running an O/R prochamber, and from what i understand MIL eliminators dont work on the 05-08 mustangs, short of another tune or going back to stock H pipe what are my options

 

You're correct. MIL elim's are not needed on the S197. Everything is modified via the tune. You could just plug the rear O2's (mine are) without a problem. Check with some of the aftermarket tuners or get a (highly recommended) dyno tune.