I have been trying to find information on how the ECO mode in the Trackhawk functions but havent been able to find much of anything. I am not a fan of 4 cylinder mode for several reasons and have always disabled it on every car I have had. I know the Trackhawk has an "ECO" mode, but was wondering if anyone could tell me specifically what "ECO" mode does. One final question is what happens to 4 cylinder mode if ECO mode is disabled. If anyone has any info, I would greatly appreciate it!