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Uploaded on Feb 13, 2012
This is my 2011 FX4 F-150 Ecoboost Twin Turbo with a 4" Exhaust from Turbos back and 4" Flo Pro Muffler Exhaust done by a local muffler shop. I still get @13.5 to 14.5 mpg in town if I keep my foot out of it. Not any difference in stock. just need cold air intake. will get in a few weeks.Added @ 40-41 HP/ RWHP You can hear the really hear the whistle through the exhaust better than stock and also in the cab. Looking into getting a tailpipe over rear end and out back to lessen cab noise and display what i have under the truck. LOL