Prototype SIR Compliance
#32544 from Club Racing Board · Member advisory · Minutes (2022-04 Fastrack)
MA – 22-01
The Club Racing Board has become aware that P1 competitors are attempting to defeat the SIR stall test by programming the
ECU to shut down the engine when it senses a drop in RPM to avoid the detection of controlled leaks in the air box. The rules
clearly state that the introduction of air behind the SIR by any means is prohibited.
The CRB is developing innovative methods for detection and requests that the Stewards of the Meeting (SOM) employ zero
tolerance in connection with any SIR infractions or attempts to defeat the SIR stall test.”
For additional details, contact the tech department at SCCA.