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    Power Difference

    The exhaust hangers are the same parts in the same locations between the Expy and the Navi. So, it is doable, but your friend would have to replace everything behind the manifolds (including the cats).
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    Power Difference

    There is also a significant difference between the exhaust systems on the Expedition and the Navigator. The expedition has a single exhaust with a traditional muffler. While the Navigator has a dual exhaust with valves in the muffler to significantly reduce backpressure during high flow situations.
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    First Heavier Tow -- Observations and a few Questions

    Tow/Haul mode the entire way.
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    First Heavier Tow -- Observations and a few Questions

    I hauled my 5000lb GVWR travel trailer to from Michigan to Florida and back this February with my 2018 Max XLT FX4 with Heavy Towing Package. MPG ranged from 6pmg to nearly 11mpg, hand calculated on individual tanks. The largest factors, in order, were wind resistance (headwind vs tailwind vs...
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    I have cam phaser issue :(

    A "rattling" heat shield does not necessarily mean that it is in danger of falling off. In fact, most exhaust heat shields that rattle aren't actually at any risk of falling off. They usually rattle because of welds that are slightly too short or bands that are slightly too loose. Neither of...

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