Interesting! So instead of increasing octane it delays ignition. I wonder if Civic Type-R and Swift Sport can use these 2T additives rather than using Octane 97
Hoping this works the same as high octane fuel.
Before this I am on another fuel additive which is slightly more expensive and have been on it for the past half year or so, so see which works better and cheaper....

It's 19" and 20" only though.