[oletrucks] headers = less mpg WHY??

["Durwood B. Darbin" <dhckdkcsk@hotmail.com>]

To the all wise and ever knowing list,

Why would one get less miles per gallon after fenton headers were 
installed??  I thought that headers were supposed to make the engine be more 
efficient AND give you more hose power and torque and all that stuff.

Very Confused,
Durwood
51 Chevy 1/2 ton Deluxe 5 window
52 Burb

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