Might as well light your $20 bill on fire. It won't do ****.

 

X2. Why does everyone think that high octane fuel produced more heat. Actually it combusts at a higher temperature so it resists detonation allowing a lot more timing and boost on the same A/F mixture. I will do nothing unless you are tuned for it. In fact, it might reduce power as it wont have enough time to completely combust.

 

i filled up with 94 octane with 10% ethonal the other day and i swear my car pulls less than it did on 91. maybe its just my imagination cause it did get up to 140 mph much faster than it did on 91, man i make a whole lot of sense dont i. lol