Curious. I've heard a bunch of people talking about "loud Spintechs". I'm running them on my build. A bit over 600hp, 11:1 compression, 3" exhaust all the way from the headers, through the X-Pipe, through the tail pipes. It's even a convertible. It gets maybe a little loud at WOT, but not what I'd consider real loud. Mine are the short ones sold by Ram Air Restorations. They're a 12" case built to Ram Air's specs. They're similar to the Sportsman 3000 I believe.
I have been through about six exhaust systems on my car over the years with about the same number of mufflers. Just never found anything that was different sounding, but just right. My current system is the one I am finally happy with. It's an x pipe, 2.5" pipes into Dynomax bullets, and tailpipes to the bumper. It's got a rumble, but a clean 60s kinda sound and is very streetable (even though Dynomax says they are not legal). It's also quieter than my flowmaster system. I still have the cutouts on it for track fun. I'll be doing the same system on my Chevelle this year.
i tried the Dynomax VT muffler on the Nova,with 3" and an X pipe i always liked the sound of the dynomax on the 5.0L Mustangs, these have the flapper in them supposed to be quieter at idle and cruise and then open up at WOT but i find them a little too loud at cruise, they have a really good sound to them not a raspy as a Flowmaster and a bit deeper than a magnaflow. i have always liked magnaflow in the past, but i think i am going to change these ones out for a old school Dymomax
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
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