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93 90CSQ Questions
A friend of mine has a '93 90CSQ with exhaust problems. Basically, both his
cats has disintegrated and basically are blocking the exhaust. So:
1) Has anyone replaced the front and/or back mufflers on one of these cars,
or know of a source other than dealer?
2) Anyone know why both cats would be dead? Apparently there is a TSB on the
3) How much of this car (2.8 V6) is the same as the A4?