As of today it's a 92 Custom tune!! I also got a 92 Winter tune done so when the fuel blends change I'm all set! The difference between the generic tune and a custom is huge! Really woke the old girl up.
91 performance seems real popular. I would think the 93 would be.
If 93 octane was readily available in Washington, that's what I would've had the tunes done for. But, alas, we only have 92.