When the original rear cat on the left side went bad, it didn't throw a code because it was behind the 02 sensor.
Currently, there is just one on each side, the Walker Ultras, with the rear 02 sensors screwed directly in them.
I am close to pulling the trigger on a pair of the Magnaflow catted downpipes. I need a permanent fix, not a 1, 2, or even a 5 year fix.
97 T-Bird LX 4.6 - 80k miles
94 Supra TT Auto - street/strip car
04 CVPI- Brenda's car - 76k miles
95 T-Bird LX 4.6 - fully optioned, owned 15 years, 220k miles
96 Cougar XR-7 4.6- Brenda's car, owned 11 years, 187k miles
88 T-Bird 3.8 - first T-Bird, owned 5 years, 206k miles