So, I purchased the Speed ECU Performance 2 tune for my XX. On Speed SxS website they tell you there is a 3-5 day turn around and to write your name on the ECU with a Sharpie. I assumed that is because they send it back to you. Oh no. I got a different ECU. No biggie until I plugged it in. Runs great but now my hours are 3x what they actually are.I guess the Odometer is saved in the dash display but engine hours are saved in the ECU. I have called and emailed Speed with no response from them. This is the second time I've had to reach out to them and the second time I have not received any response. Very poor custormer service response. If Speed reaches out to me I will ask them to send me back my original ECU and problem solved. If they just give you another ECU that should be an option you can select if you choose to with the understanding that your engine hours will be different. They should not do that without the customers knowledge. Anyone else have this experience? Sorry for the rant.