What octane is everyone running on their cars? I know the minimum is 87 octane, with 91 recommended and 93 recommended for M cars.
I’ve ran 87, 89, and 93 octane and have felt no performance difference. Also, I don’t hear any knocking on any octane thanks to the knock sensors.
Car is a g20 m340i with a b58.
Wish I could get 93, highest in California is 91. My tuner said CA gas is shit and recommended a gallon of e85 at fill ups.
Data logs look good
You can get 100 octane at a small number of gas stations in California, lots of them refer to it as “race gas”. Here’s a handy map someone else made of gas stations in CA that sell it: https://www.google.com/maps/d/viewer?mid=1yGUCmpCLUUPb4L_puE7bHQqXMlc
Apparently Ultra means something different there