93 Octane Fuel

[SinaiTSi]

This may sound like a really dumb question..... but here in Va. we can chose from 91,92, or 93 octane fuel. I've been running on 91 lately but, I hear a lot about people wishing they had 93 or how much better it is. Is 93 really that much better, will I feel a difference? I know it's supposed to help get rid of knock but has anybody noticed much of a difference with it between 91. Thanks.

 

[grans0o]

Yes, I notice a difference. Once its been in your system a while your ECU will lean out your fuel a bit and you will get a bit more power. To me its like the difference between driving in cold weather and hot weather.

 

[ISUJakey]

You'll never know the true performance until you log your car's performance with the different fuels. You may see less knock running the 91 octane versus the 93 octane simply because of fuel quality. Theoretically, your car should see less knock on the 93 octane but it all comes down to fuel quality.