[Burnin21]

Definitley use a higher octane fuel instead of a booster. Running octane boosters doesn't increase octane like you think it does, not to mention it turns your spark plugs a rustic orange colour. I've run 94 in my car for 8 years now, I won't put anything else in my car. Shell 91 is the next best in my opinion, that fuel is good but also contains nitrogen which helps with a cleaner combustion.