We will be following sound requirements listed in the SCCA Solo Rule book Appendix I (p. 310) .
LIMITS:
Warning Limit: 96 dBA
Max Limit: 100 dBA
ACTION:
If a driver exceeds 96 dBA, a warning will be given to the driver/vehicle as a courtesy. No action needed.
Starting in the 2023 season, if a vehicle exceeds 100 dBA, an adjustment will need to be made BEFORE the next RUN (could be the co-driver). A 10-minute mechanical can be used in order to complete an adjustment.
PENALTY:
If the first adjustment does not reduce the sound level below 100 dBA that run will result in a DNF. A 2nd adjustment will be allowed. If the sound level exceeds 100 dBA again, that run will be a DNF and any remaining runs will be scored as DNS.
PROHIBITED ADJUSTMENTS:
Adjustable direction exhaust exits to laterally aim the exhaust output away from the sound meter position is not allowed. Adjustable directional exhaust exits may only be aimed straight up, straight down or straight back.