I'm looking at the 2004 MAC Performance catalog and I notice on page 44 that MAC now offers the Pro Chamber with cats. It's a 3 piece design and has the dura black coating. It says it will fit manual and automatics. Anyone have this on their car. Any opinions!
Actually they have yet to be released. They are shown in the catalog but are still in manufacturing at this time (according to MAC in California about a week ago). When they are available we will have them available at Partshopper
Ive gots Magnaflow cats on my Pro-Chamber and it sounds fine. At first it was a little quieter than the PC without cats, but after about a week it got loud again (No, there are no leaks) My car was never very loud at idle, but when you get on it the Pro Chamber is about as loud as anything Ive heard. The cats seemed to have made the exhaust sound even lower than it was before, but that could be because I have 2 chamber flows which I have read sound better with cats.
I have a prochamber with Mac cats but I had to buy my cats seperately and have them welded in. Wish this thing was comming out back whenever I did my setup.
As for sound, my car is still loud as can be with my setup.