Muffler upgrade

[XLTExpoGuy2010]

Hey guys have a 2010 Expo XLT 5.4v8 3v just curious to see what mufflers y'all have on your expo and did you guys see any improvements in fuel economy? Trying to milk the truck for every mpg we can get. Already have a superchip tuner on it seeing what else I can do that won't break the bank.

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[Lostneye]

I have the Magnaflow cat back. The rumble made my heavy foot heavier so I can comment on gas mileage. But according to the truck my mileage didn't really get any worse so I would guess there may be a little improvement if you keep your foot out of it. FYI it is noticeably louder and drones around 70-75 mph.

 

[GAINMOB]

flowmaster 40 series...love it and the drone