Correct : 110 octane gas burns slower to prevent detonation . Street engines with comp ratios 10.11:1 or less can use 93 octane with a small amount of octane booster . 165 psi of cylinder pressure is about the limit with 93 octane . I'm using 93 octane with 2 ozs. of Race Gas per gallon to raise the octane to 97-98 , no problems .
