Edelbrock BRZ, 91oct (from 76 gas station), stock otherwise. Datalog to look for advance multiplier dropping, RPM hang at the end of the last log (clutch in, RPM won't fall)Datalog File: ZA1JB01C-enc_Eforce_6B_83_A7 - 13-02-2016 10-38-09.csv ZA1JB01C-enc_Eforce_6B_83_A7 - 13-02-2016 11-00-07.csv ZA1JB01C-enc_Eforce_6B_83_A7 - 13-02-2016 11-17-55.csvFuel Type: 91 Octane