Re: flowmaster cat back
Realistically I think you get that no matter what brand. Some are better, however. I have a Corsa on my Yukon and had a Corsa Sport in our Pewter H2. The drone you describe was far less than the Flowmasters I've had but still you get that resonance at certain RPM's no matter what.
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2006 Fusion Orange Limited Edition H2
2008 Greystone Metallic / Sedona H2 (Sold)
2004 Sage Green H2 LUX w/ Nav (Sold)
2006 Black H3 LUX + Off Road (Sold)
2003 Yellow H2 LUX (Sold)
2003 Pewter H2 Adventure (Sold)
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