I had one, great sound but huge drone at 60mph with a slight load such as a hill or towing My kittly ran away so maybe that has part to do with it. My magnaflow is great no drone, good sound when on it and it seems to have better throttle response with Mganaflow.
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06 2500 4x4 QC SB auto Big Horn. Leveled, 325/65/18 on Ultra Predators, Smarty jr., S&B, Glacier bypass fuel filter system, Dipricol,50hp DDP injectors, AFE 4" turbo back with 30" magnaflow BD super B if I can ever get the time to hook it up