104 in a stock mustang for more power? It will probably make less power with 104 than 93.
stock? absolutely.
Used to run 93 in my NA stangs. Turbos love high octane though, and its a noticeable difference. The only stock engine that I noticed a physical response to higher octane fuel was the wankel. I'm convinced that engine was secretly designed by a woman, it literally drinks money.
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