Yes it was all done on 91. Like I said, I understand Dynojets do read higher than others.. But thats what I got. Now after doing some pulls after the tune im noticing that the car is on 21 PSI. Not that its a HUGE factor but another lb. of boost is another lb. of boost. As far as the Conservative/Agressive tune, im just stating what I heard, I dont know any details other than he said the timing was very safe, and there was virtually NO knock. He said intake temps looked great and the A/F is right on point. Again, im no professional, Just going off what I was told.