Us and euro gtr can run ron 95 but factory mapswill cut output, with cobb ap you are able tune the engine to run 95. I've got mine tuned at 1 bar stock everything 480whp and 1.2 bar 500whp however advisable to go 97 with that map.
I reckon it would be a good idea to compile a spec sheet of subaru owners nationwide. This as well also helps with logistics when we plan doing some modification and etc.If you would like to add your list of mods...