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Discussion Starter #1
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 converted there truck back to stock and had hard time with smog. Please help, last choice will be take to dealership.
 

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Any luck on this? Did you ever get it to pass smog, I am having the same issue with my 2016 titan.
 

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I just posted this on another thread...
1 more thing for those of you running emissions on tunes. Again only at smog test time in addition to re-loading the stock tune you will need to unplug your sotf switch and plug the crankcase pressure sensor back into the main harness.
If you skip this step you will be plagued with check engine lights and PO 51D crankcase circulation pressure high and PO 601 ecm internal memory checksum invalid codes and not pass smog.
 
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