Hey guys, about to become a new owner of a IX MR hopefully soon. Quick question, the previous owner has had a ecu tune on the car and he said he will return it back to stock for me. My question is when i take it to a dealership around me for warranty work if it happens, will they be able to see that the car was tuned even though it was returned back to stock?

 

From what I've heard only the X will be able to see that was done.