Really shitty gas mileage

[99greenex]

ok guys i have a 2004 civic si hatch with 10777 miles on it and i only get 92 miles to half a tank on premium i dont drive crazy or fast there no point but just wondering if u guys have any idea.
1 more thing when im turings at low speed or turning at all i hear a loud clunking or clicking noise every 1 tells me its the suspension but i dunno the car is bone stock

[alawa]

take it to your dealership, all that jazaz is covered under warranty, get the bes tout of the shitty 3yr/36k

[marshall mather]

Originally Posted by 99greenex

ok guys i have a 2004 civic si hatch with 10777 miles on it and i only get 92 miles to half a tank on premium i dont drive crazy or fast there no point but just wondering if u guys have any idea.
1 more thing when im turings at low speed or turning at all i hear a loud clunking or clicking noise every 1 tells me its the suspension but i dunno the car is bone stock

do you shift at low RPM? liek below 3000? if so, don;t making your car works too hard bogging wastes gas too. try to stay above 3000 and below 4500 and you should get decent gas milage... and don;t pump premium unless your car is heavily modded.

[JDM_Honda]

^^are you insane, I shift at 2000 - 2500 rpm and get perfectly good gas mileage

[marshall mather]

ummm... no shifting at low RPM under 2200 especially for the new Si is bad for it, since your car works harder than it should. honda recomend shifting at least 3000 rpm, or at certain speed.

1-2 gear 15mph
2-3 gear 30mph
please don;t go to top gear unless you're at least 45 mph

[gurusan]

For a b16 shifting under 3000 makes the car work hard.

But not for a k20...and especially not for an h22.

[mad-ass]

Originally Posted by marshall mather

do you shift at low RPM? liek below 3000? if so, don;t making your car works too hard bogging wastes gas too. try to stay above 3000 and below 4500 and you should get decent gas milage... and don;t pump premium unless your car is heavily modded.

truely stupid i must say.
since when did Honda Owner's manuel say to dump 89 or below to K serise motors?
something to think about right?

[Cukali]

Originally Posted by mad-ass

truely stupid i must say.
since when did Honda Owner's manuel say to dump 89 or below to K serise motors?
something to think about right?

There are many factors involved..if your accelorating, DO NOT start at low RPMs, if your maintaining speed (cruising) than 2000 rpm is fine. For me, I keep mine at 3k most of the time. My gas mileage is about 28 max on the highway, and about 20-23 city. I would not use 93 octane unless you do striclty city driving in high temp climate. Low octane for highway cooler climate.

Mine will ping with 87 or 89 in the city so I use 93. Traveling I use 89.

Mine also makes a "clacking" noise right at 2200 mostly when deccelorating. I suspect its the vtc hitting the stop. I am going to diag it soon to make sure. Asking Raz also, he probably knows what it is.