So Can the Factory Nav do this? Or is this Magden?

Originally Posted by LOU@AMPLIFIED

Yes, both computer plus via OBD-II and AUX input. I have the MAGDEN on my car G37 and the pictured infiniti on the first post is my car. Sorry for the bad pictures. The Magden Computer is great. I was able to monitor 14 different reads from the ECU and is upgradable. eg, AFR, AIR INTAKE TEMP, IGNITION TIMING, RPM, SPEED, G FORCE etc. More info at Magden Automotive | Fast And Furious | M.1B Performance Computer
They are also featured on the new FAST and Furious movie

As for the Blitz, Last time i spoke to my blitz rep, the RVIT-DS is not completely compatible with USDM cars just yet.

Heres the right up that one of my customers wrote on the myg37 forum:

Magden install - MyG37