Tune octane setting...93 or 91?

[NavySeabee]

I get 93 octane gas here but tune is set for 91. It does have 93 octane option available. Previous owner used this setting in case he picked up lousy gas.

My question is, should I use the 93 setting? Am I missing out on a bit of performance by using the 91 setting? Any repercussions?

Thanks!

[jstevens]

93 tune should give more hp/tq.

As long as you have access to good gas.

[1stMerc]

If any concern, wait till the switch is made back to summer blend. You should be fine.