Travis,travis wrote:I know the test is old, but since someone changed the name of my post the point of it was kind of missed. Paul (aka PDQ67) had mentioned several times about never seeing a dyno test comparing the perforated core glass packs compared to other mufflers, and I had this magazine handy.
The dynomax VT mufflers tend to rattle within just a few thousand miles...I think they quit making them.
I'm not a fan of glasspacks myself. Hooker Aerochambers and spin-techs are pretty much my go to mufflers now, although I really like the super turbos on my F-150 as they made long distance driving much more enjoyable. I've used a pair of Pypes M80's (basically a 14" race bullet) on both my truck and my Suburban and hated them. The noise was just insane
What are the old Walker/Dynomax/Thrush, smooth perforated inner pipe real glass packs called? You know, the red painted ones.
The early ones were made like three-piece cans and now they are, "hydro-formed".
And I like their, "cackle"...
pdq67