Fuel economy

[SBodoh]

I have noticed in the past few months that my fuel economy on the freeway has dropped. It seems like it has been a big drop. I used to average close to 19mpg and now I am around 15-16mpg. Is there anything besides a tune up that I can do to help manage the fuel economy? Chips, tuners, etc??

I changed the plugs recently and the coils were still good. Good air filter and new oil changes every 5,000 miles.

Thanks.

 

[docraymund]

You can lessen the weight of the vehicle. Take out unnecessary items. Make sure tires are properly inflated and wheels are aligned. You might have a misfire that's undetected. Install the Torque app and monitor the misfire counter. There's a post here on how to do that. And buy gas on the cooler time of the day because gasoline is sold by density, not by volume.

 

[1997SCEBFEX]

Fuel filter change too?
You mentioned new plugs, what gap did you set?
Are you going by the "lie-o-meter", or actually computing miles driven by gas purchased?