I searched for a similar post but couldn't find one.
I have a 2012 wrx with stage 2 93, cobb down pipe, AEM cold air.
i was talking to a friend of mine in CA where I will be living until april and he says i cant get 93 octane out there. makes me wonder what i will run into on my trip out there.
should i run down my tank of 93 and switch the tune to a 91 before i head out?