[@wot]

Raising the octane from 93 to 102 is very difficult to do with boosters or other additives. The problem is simply volume. 16 or 32 ounces of additive can't chemical change 18 gallons of fuel. Advertising claims are designed to make you buy, but the reality is you'll need 5-10 gallons of race fuel to start raising 93 octane fuel. A couple gallons of toulene is also very effective if you want to expirement.