Does anyone know if it is still possible to remove the rear O2 using HPTuners? I tried posting this question on their forum, but all of the threads that I post in are completely deleted after asking the question. It seems that the Engine Diag DTCs are now greyed out on that option. I'm hoping someone had ideas.

 

 

Thanks! I had just upgraded to 5.0. I didn't realize it took it out in that version. I was able to roll back to 4.12 and all of the features are back.

 

5.0 requires you to take the training course then HPt will provide a device code to enter that unlocks the grayed-out features. It's explained in the video above.

 

That's actually a really smart way to take the liability off HPT and put it on the end user.

 

Glad you were able to roll back -- I'm in search of an older version myself <5.0