I have a friend with an 03 corolla with bad cat. and the cost to replace was over $1000, of course it has 270,000 miles one it. And I had a ford ranger that went bad about 140,000..so yes they do go bad, mine had to replaced....and the corolla is just blow out, so only problem is the check engine light stays one.
I took the cat off my '80 about 3 years ago and replaced it with tight-tuck headers, 2 1/2 inch aluminum exhaust, and Magnaflow mufflers. Absolutely helped performance but I also installed a performance cam, dual plane intake, and 770-cfm Holley carb.
Also, in Ohio, some cars are permanely exempted from ever having an emmisions check.
Several types of vehicles are PERMANENTLY EXEMPT from the E-Check test requirement and do not need a visual inspection. A complete list with a detailed explanation may be found in Ohio Administrative Code, Section 3745-26-12(c). It is not necessary for vehicle owners that are permanently exempt to be issued an exemption certificate. The most common types are listed below.
Vehicles more than 25 years old, as determined by vehicle model year;
Commercial vehicles weighing more than 10,000 pounds gross vehicle weight rating;
Historical and collector's vehicles - contact Ohio BMV for details;
Parade and exhibition vehicles - contact Ohio BMV for details;
Motorcycles, recreational vehicles and motor homes - contact Ohio BMV for details;
Since my car is older than 25 years and I have Collector plates, I qualify for permanent exemption under numbers 1 and 3.
Corvette is a registered trademark of the General Motors Corporation(GM) &
Chevrolet Motor Division. Vette Registries, LLC is responsible for all site content (except for member submitted content or where otherwise
noted) and does not claim or imply that Chevrolet or
GM is responsible for Official C3 Vette Registry content. Vette Registries, LLC is independent from GM and is not affiliated
with, sponsored or supported by GM. Copyright/trademark/sales mark
infringements are not intended, or implied and are in fact used to support
GM, Chevrolet and Corvette.
Official C3 Vette Registry content is Copyright 2001-2017, Vette Registries, LLC. Content may not be reused without written consent. All Rights Reserved. NS
Corvette (Vette) Model Years on this site: 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982