Grats! Thats one sick Cobalt! Not as fast as a Honda Si but its ok

 

 

I found a gas station that sells 93 octane would that help out with hp? Or do I need a tune for that to help. Thanks

 

computer adjust for a high octane mode (93 and up)

 

I don't think that's true. IT has 2 fuel maps, high octane and low.

It only uses low when substatial KR is recoreded. You shound;t get KR in a stock set up with 91 octane, so you should be good to go with 91.

93 and up DOES help, however, if you have the ability to tune for it, as shown by this dyno here