Ever since I opened my big mouth and started sqawking about some custom mufflers I was having made for my Superformance, I've been getting hammered with quite a few inquiries.
The new mufflers were completed a few weeks ago, but timing, some serious out-of-country travel (business related), and a mid-March car show that I've already signed up for has saddled me on finishing this project until late March.
So I figured I'd at least show you some preliminary photos of the mufflers. They were made by Stainless Specialties in Sebastian, FL, to my specifications. Let's keep in mind that the stock Superformance muffler is a 4" case (approx. 21" length) with a 3.5" inlet/oulet,
but with a puny 2" inner perforated core surrounded by steel wool. A real performance choker, and some have reported HP losses in the 40-50 range alone due to these restrictive pipes.
What I've decided to so was maintain the external appearance of the stockers but with a radically different core. Here you can see the raw unfinished mufflers next to a ceramic coated stocker.
I had these custom units cut one inch longer to 22", and then had the ends domed down to 3.5" (to match the entry/exit points. I intend to use the same collector and tail pipe. I had the muffler extended one inch, as I will lose some material on either end when we make the cuts to fab it in. The overall length of the pipe will then be maintained.
The cores on these stainless mufflers are a full 3" perforated tube surrounded by a ceramic mat.
Notice that a baseball can be rolled right through them!
My objectives with this modification are two-fold: I want more performance and I want a louder, more aggressive exhaust note. It is my estimation that I will achieve both with this set-up.
Oh, yeah, the cost. Each muffler ran $160 plus shipping.
Stay tuned for Phase II in 5-6 weeks, when I have Alex Mickelson of American Roadster do the fabrication work.
-Dean
Custom sidepipes - Phase I
Threaded Mode
