Well that’s nifty.
CK5
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My quest for quiet, free flowing mufflers
- Thread starter Shawn
- Start date
This is the VT I was talking about that seemed to make my Buick 1/4 as loud as the straight-through. It's like Ultra-flo, but with the valve at the end. They are available with different "HP" ratings for different spring rates. I'm sure there is some restriction - never found any data. Being loud at WOT isn't a problem, it's a feature, IMO.
Those don't look to be in production any longer except for the 11-12 Mustang with 2.5"
https://www.jegs.com/p/Dynomax/Dynomax-VT-Mufflers/1316158/10002/-1?itemPerPage=60&pno=1
https://www.jegs.com/p/Dynomax/Dynomax-VT-Mufflers/1316158/10002/-1?itemPerPage=60&pno=1
BBK makes an adjustable muffler too.
On the BBK you have to use a wrench to adjust it. That can be a PITA to get underneath 2 mufflers plus I could see that bolt/nut getting harder to turn over time from heat/corrosion.
