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hey everyone, a few months ago i purchased my first honda, a 99 civic hx. im new to the whole honda scene and im still learning about my hondas and my car. i civic currently gets around 26-28 MPG. i would like to see this number be closer to 35 if possible. besides changing my driving habits, does anybody have any suggestions on how or what i can do to see this goal MPG? ive heard intake and headers, but i would like to know what you all think. thank you for your time.

-Waderic

 
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pretty much any 'mod' you do to your car will give you less mpg and more hp. that goal is only realistic if you drive entirely hwy miles and have a perfectly maintained car and never drive it above 3000 rpm. I get 35 mpg consistently. Other then that when my tires were really over inflated I was getting closer to 38 - 40 mpg. No joke.

 
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thank you for your input. im gonna try over inflating my tires a lil bit.

 
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LOL, sorry I wasn't recommending over inflating your tires but it is true. Mythbusters even did an episode on it.

 
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Pump up the tires.
Fill the gas tank, jump on the highway.
Go a rock steady 55 MPH for 300 miles.
Stop and fill the tank again.
Calculate your mileage.
Gloat.

My 12 civic is rated at 29/39. I got it to 52.3 MPG by going a steady 55 MPH for a really long time. Mileage dropped like a rock as soon as I got into stop and go traffic.

It's cold here, my usual in-town mileage went from 27.8 to 25.5ish. I don't let the car sit and idle to warm up, either.

 
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Theres a few threads on this already, but anyway

-remove unneeded **** from your car
-pump up your tires
-be easy on the gas
-shift sooner (manual)

thats a few things you can do..

 
Rep Power: 517

Ooh! Ooh!

High quality fuel with the proper octane rating, not cheapo no-name stuff you get at the beer and lottery convenience store on the corner in the hood.

Avoid alcohol/ethanol, if possible.

Read up: http://www.toptiergas.com/