Hi all, I am getting a P0432 code just 2 weeks after replacing a passenger side Catalytic converter. The New Passenger side Cat is not on an original OEM, but an aftermarket dual converter setup ($399). The Drivers side was previously replaced with a used unit from a wreck with only 40k on it only 2 years ago. In addition, under hard accelleration I am getting some "knock/ping" which seems to be coming from the drivers side directly in front of me. Any clues? Recommendations? Should I replace the Drivers Cat with a new aftermarket to match the one just replaced or should I go with another used OEM unit? Or could it be the O2 sensors? All of them were replaced on both sides 2 years ago with the 1st Cat? I cannot see paying 15% of the value of the car to replace 1 bank of Cats (just cheap I guess). Car is a 1997 with 130K in good shape. Is the P0432 code Drivers side or Passenger? What should be the next step? Thanks Eric in Mesa AZ