Thank you, scott750! I have asked the repair facility to do this. They are having a hard time finding the problem.I was posting the trouble codes description to show others when they stumble upon this thread during searches.
Long Tube headers are only aftermarket. From factory TBSS comes with shorty cast iron exhaust manifolds. Visually inspect/check the O2 sensor wiring and connectors for any broken or bent pins. Check for corrosion too.
I took it to a different repair shop and they replaced the ecm. Another pricey repair but I figured just one more. It drove very well for a few weeks then the check engine light came on again. The OBD displayed 2 codes about stuck lean and one of the sensors. It went off within a day and has not come back. Fingers crossed!Keep us posted on the progress. Hopefully the shop finds and fixes the issue.
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