Apex, thanks - Summing up; So would you agree, its not the FA24 engine, HP or Torque it’s the 13 to 1 compression ratio primarily that dictates octane requirements?Welcome @Blacky
The current 86/BRZ requires it (AFAIK) and even felt sluggish with 91. With this 2022+ model being higher output I'm sure it will require it too. Using the recommended octane rating is always you best option, even if it costs you a few bucks more a tank.
I don't know how you can separate the engine and the compression ratio so I'd say it's both and how how Toyota and Subaru have tuned. In general higher grade gasoline/petrol is better fo performance engines. Even if it's not recommended I'm going to go with premium fuel over lower options.Apex, thanks - Summing up; So would you agree, its not the FA24 engine, HP or Torque it’s the 13 to 1 compression ratio primarily that dictates octane requirements?
Agreed, both comp and HP need to be addressed together, now we all await these new rolling toys!I don't know how you can separate the engine and the compression ratio so I'd say it's both and how how Toyota and Subaru have tuned. In general higher grade gasoline/petrol is better fo performance engines. Even if it's not recommended I'm going to go with premium fuel over lower options.