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Tom, before you pop for the UltraFlo Welded, look into the new Dynomax VTs. You could run the 17956 and have a sweet sound, no drone, and plenty of noise at WOT. They really are pretty darn slick. We have three sets we are playing with right now.
And, there is rebate on them too so for $75 you get state-of-the-art technology, great sound, no drone, and all stainless steel body and tubes.
Tom

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I plan on running Dynomax mufflers on my Road Runner. But I'm not sure I like the idea of a spring/back pressure operated butterfly valve in my muffler. I'm sure it works fine when new, but what happens if/when the valve corrodes shut due to condensation/soot? What happens if the spring/linkage breaks?



Just throwing it out there...