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Discussion Starter #1
I have a 4.3L in my 89 4x4. I am looking at increaseig my gas mileage. I have no ida what the truck is getting becasue my odometer was possesed. For every mile it would go forward it would go 4 back... Anyhow how much gain will a set of headers and dual exhaust give me?


:racing:
 
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