Race gas won't help for **** if you're knocking. Get a proper tune before you even think of running the car hard.
Yesterday I was scanning and had anywhere from .5*-2.7* KR on my 3.4. Same results when I later switched to my 3.5. Put some 100 Oct in, no KR...
1998 Grand Prix GTP Daytona - CAI, XP Cam, Iceman tune, Speed Daddy Headers, 3.2 in pulley, Ported blower, Al 103's, 3in Catless DP, Transgo "shift kit", No resonator to Magnaflow Mufflers. 93K Miles