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Magnaflow 5" DPF back exhaust sys.

4881 Views 6 Replies 4 Participants Last post by  powerstroker67
Magnaflow claims there is is a 29hp gain and 49ft torque gain with there 5" DPF back system. Has anyone put this on there their truck yet? Does it sound any better? can you feel a power difference?
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How in the world is 5-6 feet of tube going to improve hp and torque that much? Plain tube, not much begger than factory. Can't see how possible. Maybe better to advertise it as highly polished high grade stainless steel for looks only. Can't see how this short tube would gain that much. Starting to sound like the "Tornado" guys.
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