Replacing the cat-back won't solve the problem, you'll miss it completely. I'd replace them with high flow cats :gringreenI have a 1997 Mustang GT. i have no power what so ever in my car. we found out that my cats are clogged. Is it better to repace the cats or replace the the exaust cats back? Please help. :wavey
Always a good idea +1I would just use this as an excuse to get an h or x pipe with or without high flow cats, it'll work much better, add some power and sound, and it won't cost anymore because you can install it yourself rather than paying someone to fix it with back to stock. Don't drive it until you get it taken care of, you can cause some bad problems like that.