Our cars are not designed for anyhting over 91 - 92 octain unless chiped and reprogramed for the higher octain, or if your using nitrous would it help with anythting. You might just be experiencing a regain in power because the previous owner might have used 87 octain all the time....or it could depepent ont he out side temp (cooler air is good), or the brand of fuel you use...some fuel brands have more adittives that cause you to waste more fuel, and slight loss of power......Theres a lot of factors as to why it feels better to you.
Could it be just because of the 94 octain...yes.....How likly is that answer...Not very.
If our engines were designed to carry that high of a rating then i would have to agree with you, but because there not our ECU units cannot read that high stock, im a fraid im going to have to stick with one of my alternative reasons above.
Roz
