My last engine ran fine on straight 93 E10 at 10.7 CR, but the CR's been upped to 11.5 now and I want to have a safety margin w/ my fuel choice. I don't have the benefit of 100 UL at the pump where I am, and expect to be blending some amount of actual race fuel w/ 93 E10 pump for street & strip use.

However, if I'm unable to get race fuel when needed, I figured I should keep a bottle of some type of "octane enhancer" in the car as a backup plan. Three brands that appear to be effective (to some extent) are Boostane, "Race Gas", and Torco Accelerator. I'm looking for anyone's experience and feedback on these products. I expect I'll need a ballpark octane level of 97-98 to work w/ my new engine combination, if that makes a difference.

Thanks - Brad