My Jeep I had dyno tuned and uploaded into a PCM tuner got erased by accident. I paid $1200 for the complete process and purchase of the tuner. The custom tune was supposed to be backed up on their computer "just in case", as the previous technician stated, (Maxx, no longer works there). He told me, "If you ever need it, we will have it on our computer and could re-install it on your tuner". Well guess what? No back up and the guy in charge there says "too bad". The owner wouldn't even give me a break in cost to redo it.