Anyone on here happen to know if a higher octane will benefit the Honda K20? I know with the 4G94 that higher octane gas was a waste of time and money, and could create carbon deposits in the engine. Any word?

 

my friend has an si with a k20...although not the good k20 he says he feels benefits from premium than reg.....we concocted a 100 mix and he loved it......maybe to your answer i guess....no hard data to back up....

 

if your are running a Hondata yes because you can use more timing but on a stock ecu i say no 93 is best.

 

found an article on ephatch.com. Seems that, yes, the K20 enjoys a bit more octane, and there are numbers to back it. Thanks for the help guys.