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      01-31-2012, 12:05 AM   #145
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Drives: 2011.5 e92 m3/Ford Raptor 6.2
Join Date: Jan 2011
Location: San Diego

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Originally Posted by chriszeh View Post
So is it significantly louder with no cats compared to a high flow set? I have the challenge which has 2 resonators and 2 hfcs with the primaries removed. At first I thought it was loud but now don't even notice and it seems stockish to me. Have considered full catless but unsure if its worth the hastle at this point as I've gained most of the power available from the exhaust.
The cats deff reduce sound. I only have two resonators with no cats and its loud. My car is not a DD and I love the sound so for me it works. Two sets of resonators with no cats is the way to go IMO, all the power with the perfect exhaust note...The folks at Dinan are no dummies!!