Catalytics relaced 14000 miles ago under warranty. Car has 63000 miles and they have gone bad again, only NOT under warranty....$2500.00 repair from dealer. Want an alternative. Removal !!/oxygen sensor issues?/computor issues? fix? Got to be a better way!

Sounds like a Cop.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

call an exhaust shop... you should be able to get universal converters fitted for well under half of that estimate, probably more like 20% of it.