I found this forum while researching A/F mixtures and cylinder head temps for maximum efficiency tunes for my mustang and Vrod. Looks like a cool site. I want to create a (daily driver tune) for my Stang and V-rod. Both have a dual overhead cam 4 valve per cylinder design which gives great power. I suspect that it also may yield good efficiency should someone wish to create a custom tune for that purpose. To bring up such a topic in the Mustang and VROD forums that I belong to usually gets me laughed out of the room as they are focused on HP and TQ rather than efficiency. Don't get me wrong, I love the 420 HP and 120 HP that my Stang and VROD get but since they are computerized and you can load custom tunes in both, I want to create a tune specifically for maximum efficiency. I can always upload the performance tune before going to the track.