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  1. R

    mechanic ripping me?

    Check your left valve cover closely. It may be rusting away.
  2. R

    I got the Cat Sys Eff. Below Threshold(B1) Blues

    The O2's are not the problem here. The O2's are in front of the cat's and they monitor exhaust from the engine. The cat monitor is downstream of the cat and it monitors exhaust past the cat's. The O2's have green hardshell connectors and the cat monitors have blue hardshell connectors. When...
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