Looking at the fuel relay kickdown boxes I've notice these have different RPM fuel cutout values. Are these set values different in other countries for the same models we have here? Could changing these out with boxes with higher cutout variables give more performance than the ones we have been setup with. My 380sec has a 5600+- cutout, some boxes say 6600 or even 6650+-. I might be off on my thinking but who knows this could be an area for more power gains too.