I'm impressed with the data I see with regards to intercooler upgrades.
Give this a careful read:
http://cp-e.com/sites/default/files/files/n54FMIC.pdf
Turbo charge outlet temperatures start to shoot up past 14psi and especially at higher RPM. The turbos really add a lot of heat in those conditions. It's already kinda ugly at 12 psi.
Our motors already like to fall off in power at higher RPM. Lots of top end to be picked up there. I hope the FMIC is part of stage 2.