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    I HAVE A 1999 PONTIAC FIREBIRD (V6) WITH A BACK PRESSURE PROBLEM?

    THE CATALYTIC CONVERTER WAS RATTLING REALLY LOUD AND I ASKED MY FRIEND WHAT TO DO. HE TOLD ME TO BEAT IT WITH A HAMMER AND W.O.T. THE ENGINE TO BLOW ALL OF THE DEPOSITS OUT OF THE TAIL PIPE. SO I DID. THE RATTLING STOPPED BUT AS SOON AS I GOT ON IT GOING HOME I NOTICED A DECREASE IN POWER AND...
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