Yes, this has been a common technique that has been used for many years on very, very high HP street and drag applications with alcohol, or a water mix injection system. It is about all that can be done when using an after market fixed map piggy-back chip. The turbo Buick and super charged Ford applications come to mind. With no programmable engine management, or data logging capability, it is about the only way to tune for max power. Crude compared to what can be done with more current electronic management hardware, but effective none the less.
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