I find this "TUNE" difficult to believe. most of today's ecm/pcm are so advanced that they compensate automatically. just like some people live in the mountains and some at sea level the air is less the higher you go. We have mass air flow sensors that tell the computer what is on the way in. I dont buy it i bet a simple reset of the pcm battery disconnect will take care of it. I know when i put the K&n on my 5.9 durango r/t it made a huge difference. with no tune what so ever.
Sounds like Snake oil to me.