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Discussion Starter #1
Hey guys.

Anyone use or have heard a Dynomax Ultra-Flo on a Cadillac before? The Northstar doesn't really count. lol. I'm looking for the 4.5/4.9. But Northstar guys chime in too. lol. I have a Dynomax Super-Turbo on my 4.5 right now. It's nice. No interior noise at all. The idle is nice. Actually...the muffler could be louder. I don't know how it sounds outside of the car besides idle becasue I'm always driving. lol. I noticed the Ultra-Flo is straight through. That would obviously be louder. Does it sound any good on a Cadillac?

Thanks.

:highfive:
 

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1996 Fleetwood Brougham
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I've got a Dynomax Ultra-Flow cat back system with resonators on my 5.7L LT1. You can hear it at higher RPM's, but at idle it's barely audible.

When you jump on it though, it sounds very authoritive!!
 
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