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I read on the Full Race website that there is significant post-turbine pressure in the stock exhaust, and that has made me think about putting a more free-flowing exhaust on the truck in an attempt to squeak out some better fuel economy.
But this thing sounds like a pissed off vacuum cleaner on a good day, and I just couldn't imagine making that louder. I really like my engine and the power that it makes, but this is definitely a powerplant that needs to remain muzzled.
Im hoping to put a down pipe on mine and use the stock muffler system. Hopefully gaining a lot of flow while still maintaining a realitivly quite truck.