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post #1 of 1 (permalink) Old 12-18-11, 03:12 PM Thread Starter
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Derating 5.8L Horse Power

Hi I have a 97 f250 hd with a 5.8 v8

The gas mileage is horrible. It seems like 10 mpg

Ive been told you can change the intake manifold, and install a chip to derate the engine. Less hp= Greater mpg

I been thinking about getting a ford ranger to save on gas but i love my f250. if i could get better mileage id keep it forever. Would like to know if anyone can advise me about doing this, and pointing me in the right direction.

thanks

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