Wow I had no clue this was possible.

[blacksambo]

You guys really need to try Lucas Gas treatment. My wife and I almost always get 370 miles on on a 20 gallon fill up. Also, beware of ethanol, it will spoil your mileage. Honda does not recomend ethanol for any of its vehickes sold in New York State. Exxon/Mobil around here does not offer ethanol mixes so we stick with them, no matter what the cost.

[JHarris1385]

I am lifted with larger tires, that is the resoning behind some of my troubles.

[Pepino]

i only get around 260 a tank, thats 12 miles per gallon, so if i put ethanol it will help?

[JHarris1385]

Pep do you think you have excessive exhaust?

[Pepino]

maybe im not sure, how do i know whats normal and whats excessive?

[JHarris1385]

Just wondering if you are running rich, I was and had to replace my fuel pressure regulator. Do a serach and see if you can open it up and check the condition.

[VehiGAZ]

Pepino, something is waaaay wrong - your mileage should not be that bad no matter how fast you drive. I drive ~90 mph on the highway to VT and I get at least 13 mpg.

If you have an oiled air filter (like a K&N) then you should clean replace your Mass Air Flow sensor (MAF or MAS). It measures the air coming into the engine, which the ECU uses to decide how much gas to squirt into the cylinders. The FPR regulates the pressure of the fuel in the lines, which also affects how much gas goes in. If either one of those is off, so will your fuel mixture.

You can get a new or rebuilt MAF at AutoZone, or you can use CRC MAF cleaner.