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1999 to 2003 7.3L Power Stroke Diesel 7.3L Power Stroke Diesel equipped Super Duty and Excursion. |
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Almost all after market exhaust kits are high-flow mufflers and make little back pressure. I tell anyone planning on pulling a trailer on long trips or many short trips to go with a muffler because the drone of a straight pipe exhaust gets to a lot of guys when under load.
Kenny
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