Why does it seem 1997 civic ex runs better and faster with 93 gas in it.?
 

I works very well with the vtec, no hesitation, no pings all the way up to 8,000 rpms. Why does everyone say gas rating doesn't matter in a civic, when it clearly makes a difference.

It might be smoother but it's slower with higher octane. Try it in a zero to 80 test and mark the spot with a tree on the side of the road.

its just your imagination because it burns the same.