i went from 87 octane to 93 octane and now im getting worse mpgs and cant figure it out

 

I've already answered this double post.

you don't understand the relationship of fuel and combustion

read the other thread

 

no i dont and i asked you about it and u didnt explain furthur so i reposted in a different section to see if somebody else could explain better i wouldnt have reposted it if a more detailed explanation was given so i could understand

 

Google it.. there are tons of good articles on the web that explain it. Start with HowStuffWorks - Learn How Everything Works! and do a search for "octane" on that site.. it should answer some of your questions

 

Don't purposely create multiple threads. Be patient, someone will answer your question.