Before you start fooling around with the tune using HP Tuners, make sure you save the stock tune to your laptop and on a USB device and any other place you can keep a copy...if you mess up, you will need a good place to start over...and if you lose it due to laptop corruption or lost USB drive, etc., you are done for, and will be paying the dealership upwards of $1000 to flash the ECM. That said,