So as soon as i put tunes in speedometer stopped working and the lights on the dash came on, says it has P0500 and U1412 codes. ppei said re download the tunes and put them back in the truck did that and still same thing
had to have dealer re flash back to stock. then read stock file and sent to ppei to have new tunes made with stock file in hand well there onto there 5th set of tunes since getting back to stock and now the problem is truck wont start with tunes in it. lucky I have the stock tunes saved to my computer so can always put back to stock
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