How long before they don't know there was a tuner?
Just had manifold and head gaskets replaced last month under warranty for my 2004 6.0L. I walked out yesterday and there is coolant on the ground again!
I had the Hypertech programmer in it and the dealer saw that something had been done last time so I want to make sure there are no questions when I bring it back in.
I put it back to stock yesterday. Is there a number of starts or miles so they won't know that something occured recently before I take it back in? My 5 year warranty is next month.