If I were to estimate all my Metro mods, it would probable equal out to 1-3 MPG increase on each item I did. Tire inflation would be a definate 3 MPG (or better) increase where the antenna reloction would be more like a 1 MPG increase.
It's really hard to say what the increases are because it takes time to notice them.
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GeoMetroforum.com - got mpg?
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