Mufflers. Wanna change from Magnaflows

[DocWok 30]

I had the VT mufflers on my car for almost 2 years and the are still operating as designed, no complaints, so far so good.

 

They come with a Limited lifetime warranty, so if something did go wrong with the flapper assembly, Dynomax would replace the muffler.

[Kaspar 21]

I like the sound of those. What is the difference between the VT and the Super Turbo?

[DocWok 30]

Honestly, I don't know.

Haven't come across a Super Turbo set up to compare it too.

There are a couple of clips on You Tube to listen too, that may help.

[BuckeyeDemon 211]

I started seeing those VT mufflers in Ford Racing catalogs a long time ago, 6-8 years.  My first thought was how long will that trap door keep working?  Either the spring will go bad or the door will start sticking from carbon build-up.  Great idea, but I wouldn't think the door would last the life of the muffler.

from Dynomax

 

http://www.dynomax.com/faq/

 

Q.) How long will the internal valve spring last?

A.) The valve spring is constructed from a corrosion and heat resistant superalloy that is guaranteed to last the life of your vehicle. The high temperature properties of this material have exceeded extreme environmental testing with over 2,000,000 cycles.

 

Q.) Are DynoMax® VT™ mufflers stainless steel?

A.) Yes, DynoMax® VT™ mufflers are constructed from 409 stainless steel.

 

I would think they would make the tolerances pretty loose just to ensure carbon buildup wouldn't lead to sticking (can't imagine a little leak at low rpm would make a difference.)

[1969_Mach1 333]

Good to know.  For myself, I still wouldn't want a muffler with moving parts inside.  That's just my opinion.

[MikeStang 247]

I have the Borla Pro XS Mufflers on my car right now with 2.5" Pipe and an X-Over and both pipes run over the axle and out the back, but I had them do a little turn down right at the rear valvnce.... My car is quiet at idle and sounds great when your on it but its still too loud inside the car....Its louder than my friends 69 with Magnaflow complete exhaust.

I have lizard skin sprayed inside and out on my car with Dynamat on the entire floor, Roof and inside both doors.

I have run the Dynomax Super Turbos before on my TA and loved them....Quiet in the car, no drone, and loud when WOT.... And they actually OUTFLOW Magnaflow and Slowmaster..... I have some Db results and flow sheets somewhere that show the info.

The guys over at the Performanceyears.com forums did the testing.... I believe it was Tom and Jim Hand who did the testing on over 40 mufflers and recorded the results as well as did sound clips for all of them at different Rpm's

[THE EVIL TW1N 12]

as stated earlier, cat's quiet down the vehicle immensely, more than mufflers actually. A car with no cats is much louder than one with no mufflers.

[Kaspar 21]

MikeStang please pass those test sheets along, if you have a copy of them. Would be interesting to see. Of course I wouldn't want to loose too mich power by making it more quiet. Won't a cat kill some power?

[THE EVIL TW1N 12]

MikeStang please pass those test sheets along, if you have a copy of them. Would be interesting to see. Of course I wouldn't want to loose too mich power by making it more quiet. Won't a cat kill some power?

Yes, a cat will kill some power. But more importantly, I would never put a cat on a car that wasn't designed for one due to it likely failing (breaking/clogging) in a short amount of time.