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  1. Smog monitors incomplete

    5.0L Cummins V8 Turbo Diesel
    Hello titan xd forum, im new to the website. I recently bought a 2016 nissan titan xd from my uncle. He had the after treatment delete and ppei tune. I put everything back to stock and drove the truck over 800 miles. I still have 4 incomplete monitors how ever no Check engine light. Has anyone...