Just wondering. Does dynomax have a 3 inch I-pipe with their cat back exhaust? Looked on their site but they only list 2.5 inch systems. I like their super turbo mufflers and don't want anything overly loud or raspy. Or is their any other muffler that compares? 3 inch is a must. Thanks......Zapr.

 

I don't have the part numbers in front of me, but doing a search for "dynomax intermediate pipe" will probably pull up a hundred threads with the part numbers you need. I'm running the 3" intermediate pipe on my IROC with a single 3" Ultra Flow muffler that exits on the driver side. The Ultra Flow replaced the 3" Spintech that I had originally. The Spintech was very raspy, very loud, and sounded like a 78 Buick wagon with a hole in the muffler. The Ultra Flow is a straight-through 3" pipe (I can stick my fist through the whole muffler), yet is very quiet. At idle it's really not much louder than the old 2.5" Super Turbo system was. At WOT it's louder, but still not obnoxious like the Spintech was. To be honest, it's actually quieter than I'd like, but I'm fixing that problem with a 402 LSx and 4" mufflex. When I do, I'll transfer this exhaust (along with the motor) over to my GTA, and I think this will be the perfect exhaust for a daily driver. It flows very well, and is quiet.

 

17740 is the dynomax 3in. Both pipes exit on driver side. My Dynomax is quiet too at idle but it gets pretty deep which sounds good.