| I don't see how boring the block will lead to knock. The compression ratio should still be the same.
If you can find a way to run 87 without knock, then up the boost and run 93. The goal is to go faster right? Even with a 25 cent differance, premium is a bargin over regular. Your not going to find a cheaper way to get performance than 6 units of octane for a quarter.
I bet for now, a lot of the regular and premium in your area is higher octane than advertised due to the recent ethanol rollout. Eventually is will return to the posted figures, but don't be surprised if some station's fuel knocks much less than others. |