Re: Magnaflow muffler
on the 70 series muffler, my muffler shop was able to open the inlet to 2.5" and outlet to 3". they do it to all 6.0 liters truck, suv and h2 like that because the 50 series gives too much noise in the cabin. the 70 is quiet on normal cruising with very little drone and throaty when on the gas.
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scott j.
2008 h2 sut
2008 escalade
1969 charger
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