Here are a few suggestions to put into the modification list
- Idle reduction,
- automatic transmission gear manual control (Manumatic), there are a few threads about this mod not sure if anyone has numbers on efficiency improvement
- Torque converter lock up control, again not sure if anyone has numbers on efficiency improvements
- cold idle speed reduction, I have recently done this mod, thread link below.
http://ecomodder.com/forum/showthrea...mod-14223.html
For the site admins, let us know if we need more data to get these onto the list or if there is anything else stoping these mods going on the list.