Originally Posted by
Nitro-Racer*
so what are the signs of an engine(12 size) that runs on the above percentages?? i already know how a 16% sounds and tunes but how about 20% and 25%, how can i tell if an engine is using higher percentage(16%) of nitro. thank you any respond will be helpful.
In Europe, the touring gas is at 16%, mor than 16%, it not legal for race, more nitro, its more power, but its not legal for race in europe.