You were running 11.7 AFR on 11psi with what for supporting mods???

I had a 3.4, XP, Header car that I had locking at 10.1 afr WOT on 91 E10/E15. On the rich side, yes, but my engine was happy, and it took a good amount of abuse the 2 years I had it topswapped. As a matter of fact, its back to N/A and still running to this day.