2008 G37 some stuff not reading Hp Tuners

Hey. My Name is Ron. Just started messing around with Hp Tuners to learn the software for my customers.
I have a couple questions or issues

Car is a 2008 G37

Full bolt ons headers including headers.

I cannot see or monitor injector pulse or injector duty cycle. Its just blank.

Also it shows on the logs that I'm maxing out the stock mafs out at around 6000rpm... Is there a way to adjust or manipulate this because the car drifts to running lean after airflow stops reading. The mafs read up to only 34lb/min. Is there a way to adjust this?


Thanks you guys in advance.