F5 HO engine addition
#30854 from Christopher Basela · Not recommended · Minutes (2021-08 Fastrack)
Thank you for your letter. The Club Racing Board does not recommend this change. Dyno data for the Rotax 593 HO and non-HO
engines does not show a ten horsepower difference between the engines, and on-track data obtained at the 2020 National
Championship Runoffs and the 2021 June Sprints Super Tour event does not support removal of the 593 non-HO's intake
restrictors.