Lighten weight. (HB)

[why?]

yea, why mod cars at all, it is just too much effort... Lets all run stock only and ignore any one else who mods cars for fun. Screw them, they must be mentally ill...
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I don't find there to be too much noise at all. That is what a stereo is for. I agree with taking out everything. I'd prefer to have a spare tire and a jack, but i still haven't taken the time to find one that would fit the 14's I have on it now.

Besides that though, lighter wheels help, the pulleys help, the flywheel would also probably help. etc, etc, etc. Trade everything you can for lighter parts.

And also learn to drive differently. Driving for gas mileage is completely different than just driving for fun. The FE forum has a ton of different ideas and ways to get much better gas mileage out of the car.