I tried tea-bagging my gas-hole once. FWIW, it didnt improve my fuel economy.

 

Instead of snake oil, pay attention to the mileage on the car.
O2 sensor is key provided plugs and ignition components are Ok or current.
In dynamic smog test states such as Ca, the test is engine fuel burn efficency.
Read and heed.
Driving habits next.
Heard of proper cold tire pressures?
And alignment?

 

check this out I never try but this might be helpful
http://www.metacafe.com/watch/524517...as_mileage_2x/

 

how do the heated seats rob mpg?... that's wierd... but since winter is over in Cali, i've been averaging 23 - 24 mpg... when it was cold i used to have my seat warmers on all the time and avergaged 21 mpg... but i still don't understand why... help please?...

 

But.... but..... park benchs are great! you can sit on them! why wouldnt you want something mobil that you can sit on?!

HAHAHAHAHAHAHAHAHAHA

 

Just remove weight, check tire pressure and hold ur foot!

 

will getting larger tires/rims/wheels increase my fuel efficiency?

http://www.spoiledcars.com/rims/TIS-MODULAR">Tis Modular Rims

 

All things being equal, tires with a larger diameter/ greater circumference will give you more ground covered with each revolution, and so would yield more mpg. But, and I'm guessing here, larger tires will usually be wider and have more rolling resistance. I went from stock 15" 60R tires to 17" 45R Bridgestones, and the difference in ability to coast is noticeable.

Your car will obviously look way better, but spending big bucks on tires/rims is not a good way to save pennies on gas. Get 'em for the looks and handling. Get the header/exhaust/intake for the mileage boost.

 

According to Tom and Ray from Car Talk:

"Wind resistance increases as a square of the speed at which you're traveling. So, for example, at 70 mph, wind resistance is double what it is at 50 mph (70 squared is almost twice as much as 50 squared). That's murder on your mileage."

I've recently slowed down about 5 mph on my daily commute and noticed about a 2 mile per gallon difference on a 2000 Accord LX 4 cylinder automatic.

 

[align=left]I have a 2007 Accord sedan 4cyl with about 24K miles. I have made one modification to my car and a few modifications to how I drive and I am getting 10% - 15% better mileage. I read an article about hypermilers. A handful of the things they do are easy and safe to incorporate.

- On my car, I increased the air pressure by 3 lbs. over listed pressure.
- I didn't drive aggressively to begin with, but I started to pay more attention to traffic and light conditions up ahead of me. I have been making more lights, coasting more and spending much less time getting zero miles to the gallon at stop lights. I accelerate a little more slowly and pay attention to the tach to determine the best speed at times (eg. lower RPMs under some road conditions at 48 MPH than 45 MPH).
- I also use the air conditioner a bit less and turn the fan speed up to stay comfortable. I only have the windows open at low speeds (35 or under).
- I don't start the car until I am ready with seat belt fastened and sun glasses on (daytime).
- I do pull-through parking to next space where possible. I no longer have to back up, stop, and then pull forward.
- I reduced my speed to posted speed limits or only a few above. I stay around 65-66 on 65 highways instead of 72.

Since I started this, my lowest MPG on a tank was 31.3 (approx. 40% Hwy). I have back-to-back tanks of 36 MPG and 35.8 MPG on 75% Hwy. Typically I was averaging around 27-28 all aroung (vs. 31-32 now) and 31-32 on 75% Hwy.

The best I had ever done before was 33.5 on a tank of 90% Hwy. Based on watching the fuel gauge these past two tanks, I have little doubt I could turn close to 38 on a 90% Hwy tank.

I figure I will save approx. 50-55 gallons a year using these techniques. And the longer I use them, the more they will become second nature.

Of course, your results may vary.
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