RaceGas ULTRA Race Fuel Concentrate

This isn't to be confused with race gas. It may have the correct octane, but the car sounds different. Probably need to be retuned to a different profile. If I have to pay for Dyno time, I might as well get it turned to run on pump gas. When I built this supercharged four cylinder Honda twenty years ago, race gas was readily available at several local fuel stations. That's a thing of the past. Buying a thirty gallon Drum of fuel is a pain in the ass. Until this spring I always ran Zoom or Sunoco 100 octane. I have to go see the Dyno guru before any more fuel lottery.Really looking to hear what others are experiencing. Reviews are helpful. I have had this car a long time. It runs different and sounds different. I wish I were more certain. Nobody wants to torch a motor.

Worked great for a tank . Trashed the plugs just buy race gas