catalytic converter FAILS

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Feb 24, 2014
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Our customer has a 2014 that we couldn't figure out its horrible running since last year. After swapping a new ECU, adding the O2 plugs, playing with different maps and swapping out every sensor we were almost giving up. It would sometimes run great and then other days run horrible. My dad noticed a black chunk in the tail pipe. Decided to pull the exhaust and...... Runs great now.


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