pcm code 64... catalytic converter efficiency failure. on the page with the codes, it says to either check the exhaust manifold for cracks or replace my catalytic converter. as you guys can see from my mods list, i have replaced my stock cat with a catco cat, when i put my borla cat-back on. haven't check anything out yet. first wanted to check with you guys to see your $.02. fyi, i have 158,000 miles. HELP!
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