Request Engine modification
#32622 from Jonothan Benefield · Not recommended · Minutes (2022-06 Fastrack)
Thank you for your letter. The Club Racing Board does not recommend the use of two different methods of intake restriction for
the same spec line. SIRs have been successfully implemented on other P1 cars with similar auto-based engines. Please see the
response to letter #23792 in the March 2018 Fastrack Minutes.