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    2002 Carrera 2
  1. I found some used cats on ebay, but seems pointless to buy OEM cats that will fail next time I go to the track (in 2 weeks). The other options suck too - buy new OEM's for $3,400 that will probably fail or buy aftermarkets that require switching sides for placement of the second O2 sensor. Maybe the solution is to buy a 991.
  2. Thanks very much for the advice. The scan indicated a bad cat bank (or something like that). I can't recall the code offhand, but my mechanic confirmed that it needs a replacement cat on the right side.
  3. I've read that tracked 996's often have the original cats die a rattling death. The honeycomb falls apart with the increased heat and stress. The smog check is a big consideration. The mfg's state that the products are 50 state emissions legal. They do not mention anything about passing a visual inspection.
  4. Apologies for making my first post a whiny, help me post. I need new cats and don't want to fork over $3,500 for OEM parts. There are a handful of aftermarket manufacturers making mid-pipes with 200 cell sport cats for ~$1,500. Nearly all of them move the after-cat O2 sensor about 10 inches further away from the original position. The lead wire to connect the after-cat O2 sensor does not stretch an extra 10 inches. I called two of the mfg's and asked how to solve this. They both said to switch the sides of the connections for the after-cat O2 sensor. This means the drivers side after-cat O
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