Like I said, if your not getting any KR, then get to the lowest octane rating that you can. I just don't hear alot of people on here actually talk about scanning for KR.

 

94
94
94
94
94

 

91, 93, who cares, use either and the engine will be fine, and still put out worthy performance, but if you're that hard up about octane numbers and how much performance they give you, just use CAM 2. It's about 4.67 a gallon, but it's racing fuel, so there ya go.