HAHA! I just crawled under my bird today because I finally broke my temp. exhaust hangers! And I'm so freakin fed up with my exhaust Im think about ripping it off until I can get the new exhaust installed. Thunderchicken and I have already bought the pieces to work on the single 3" design (I assume it follows pretty close to yours.) Could you post some pictures? I'm more curious to what you have done to the y pipes from the headers... I'm looking at deleting my cats all together.
Im lookin at doing 2.5 from the headers down to 3" single to a 3" 22" glasspack, then to a 3" 22" magnaflow race muffler, to center rear dump. (already have all the peices and pipe, except for the 3" pipe)
ANY input would be great.
Okay im back now. To be completley honest i think using the glasspack may not be the best idea. Just because glasspacks are loud to begin with and usually don't last long. They end up just blowing out and therefore becoming a straight pipe. As i said before this single exhaust is LOUD. I mean dynomax race bullets are loud mufflers (what i have) but holy hell this set up is very very loud. If anything i would use the dynomax bullet in place of the glasspack because they are cheap anyways (roughly $45) and are available in a 16" overall length which would free up some space. Believe me you need as much clearance as you can get unless you want to put some nasty bends in your 3" pipe. Even with my dynomax bullet 16" overall length (mid mounted) things were still a bit tight. I was able to avoid putting tight bends in the pipe but there really isn't any more room to spare.
As i said before this set up is LOUD as hell. If your going catless i would for sure suggest getting a muffler on the quieter side. Maybe a regular old magnaflow would be a good choice as those are known to be mellow and on the quiet side. And i'm not just saying this set up is loud because i have sensitive ears either. I like loud... But for comparison, my DI DO magnaflow was quiet compared to this. The magnaflow set up would be a whisper and this dynomax single set up would be an explosion in comparison.
Maybe that's a bit of an exaggeration but you get my point.
I suppose if you take things into perspective, by going to a single you are eliminating many components that quiet down the exhaust. A crossover pipe (x or H) you will lose some sound. With duals you are running 2 mufflers to quiet down the engine noise, and also twice the pipe length as well. Possibly even more than that because the pipes have to be bent so severly in order to get things to fit under the car. Also as i said before by going with the single you eliminate the bends severity as well which will also make things louder. In short your going from 2 mufflers, a mile worth of pipe, a snake full of bends, and a crossover pipe to a short, straight, huge pipe with a single muffler.
As for pictures i will try to take some soon. However things are hard to see because i tried to hide the pipe as much as possible. I also have an SC rear which also helps cover the pipe. But you can see the pipe somewhat from the rear so i will try to get a picture of that for you.