[gumby79]

+1 on finding the cause of the failure insted of just fixing the symptoms of the failure.

Have you replaced your catalytic converter?
-When did you replace? (xxx,xxx mi)?
-What brand?
-How well did it fit? IE was it bent wrong, missing bolts etc)
-How many miles since you replaced?
-Have any codes returned?
-Do you recommend, and any feedback?

Yes 4 on 4diffrent rigs. 83GMC S-15 Jimmy 2.8 v6 and an 89 Hyundai Excel , and moms 89 Mazda b2300 and 97 geo prism

120ish and 180ish 210ish were obd1 computer controled carburetor rigs 90,000 geo is obd2 all prior to 2003

3 were the universal fit (.5L-7L)3.5" pipe. Requires extra parts to adapt it in (less than the extra $1-200for the direct fit) the 97 is part of the cast iorn ehxaust manifold and no room tor an inline without melting something in the floor

The Jimmy was my first car and I flogged that dog. (Drove it like a kid 130+mph ) new cat lasted about 1 year then went to strate pipe for 6 months before the rig cried uncle. Failure was driving conditions cats dont like water be they fuzzy or ceramic. Hard driving+deep water = thermal shock followed by melting the insert on subsequent runs.
The Excel ate the cat from bad parts up streem sold the car prior to any further issues coming up.
The geo was done in 03 and is still on the road. Mom hant told me of a new cat being needed.

Zinc was removed from motor oil in2010 for improving life span of catalytic converters . Zinc is a toxin to CC's and EPA bumped the manufacturers required warranty life span from 60k to 100k on emissions parts.