MfreyderExplorerMar 23, 2014E-450 performance chipHas anyone tried this performance chip to get better mileage on a Ford E450? http://www.gfchips.com/fordeconoline.aspx Comments?
rivercity22ExplorerMar 24, 2014A friend bought one of those for his pickup only to discover after buying it he had to run premium gas for it to be effective.
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