Hello,
Just read this thread front to back.
Great work and you're right where I want to be.
Since you (just like me) like the oem "look, feel and function" have you considered the dual S55 HPFP upgrade? You could probably push another 100hp from your setup.
Its a bit on the expensive side though
http://tuningtechfs.com/ttfs-n55-dua...ctory-upgrade/