I recently dropped pulley size from a 3.5 to 3.3. I have a plog, factory dp, u-bend replaced with straight pipe, 1.9 rockers, zzp stage 1 tb, factory plugs, factory thermostat. WOT= 17* of timing, 10 pounds of boost, less then 1* of KR on 91 octane. I usually run 94 but was about to run out so had to settle for 91. I expect to have 0 KR with the 94. This is good?