I have an 04 mach and just ordered a magbaflow catback. I originally had a flowmaster 2 chamber with a bbk o/r x. It sounded horrible together and I felt like I lost power. When the check engine light came on I decided to put on the stock h pipe. My question is now that the flowmaster catback will be replaced with the magnaflow will the bbk x pipe be worth putting back on or is it just garbage. I am trying to decide before investing in a set of mils. I was told that one of the reasons it sounded like crap was because of the chambered mufflers. I called bbk and they recommended themagnaflow but obviously they wont say there product is junk. I like my car loud but I want good loud. I also dont want to lose power or torque. Any suggestions?