Hello,
just as the title says. I just gutted my highflow catco cats ( I thought they were clogged) and installed a 3" in/out stainless steel spiral flow muffler into the intermediate pipe. There is NO rasp at all, NO popping when changing gears, and it DID quiet the car down. The exhaust note is clean and crisp and doesn't break up at high rpms. The car still sound wicked...just more refined. For those of you running no cats or want to take your cats out...but afraid of all the issues that comes along with running no cats...give this product a try. Matter of fact, I've got 3 dynatech cones that I'm want to sell . Summit and Jegs both sell the Moroso mufflers.
I got this info on the Moroso muffler while doing a search and talked to a few owners via PMs-Thanks to ones that answered my pm. I just wanted to tell the masses of my own personal experience. The spiral flow muffler really worked in my application.

-Tim

 

A cheaper alternative is the Flo-Pro Twister.

 

Now U tell me-lol

Thanks for the info. Now that I've gotten used to the new sound...the car seems a little too tamed.

-Tim

 

Ya, mine is quiet with the windows up, but if I roll them down it is noticably louder.

 

i have TDs with spiral flows and love them

 

The "cones" you have for sale, what size are they and how much are you asking for them? Did they quite the car down?
Plattted@sbcglobal.net

 

Does it sound anything like this?

http://www.youtube.com/watch?v=WJBwyCXKdnc