Running on 91 octane

[dn7309]

My dealer pumped 91 octane in my 1.4T sonic, any likley issue regards to fuel economy, performance and knocking?

 

[ThatTmoGuy]

You won't have any problems the stock tune will run fine on any octane from regular to super. You'll get better punch and MPG on the high test stuff

 

[slitzell]

Some members have reported increased mpg for running 91 octane on the stock tune. The car is programmed for premium, but then dials back itself when running a lower octane.

This topic has be talked about excessively on here, please search a little bit before starting a thread. I'm not trying to be an ass, just trying to keep the forum clean unneeded threads. Thanks

 

[xsonicLTZx]

All I ever use Use to fill my honda with 91 only and it was a 14gal tank, filling up my 10 gal instead with the same gas makes me :-D

 

[Eric Smit]

http://www.sonicownersforum.com/forum/t897/