Originally posted by 94civicEX
HOW!? I have a D16Z6 too 
. I fill up about 9.8-10 per tank and get ~210.
your gas tank is 11 gallons.
Originally posted by ManInCamo
you are teh stupid for running premium.
Premium just has a less resistance to premature combustion, which is needed in higher compression, higher HP engines.
You are not burning all the fuel, and that is why your fuel economy sucks.
run a fuel system cleaner through a tank or 3 of regular, then run regular for a month or two, and you'll see.
so its better to run 87 octane?