Ok so I know a bit to get me by on na and nitrous from over the last 7 years but now Im going turbo.

My setup is 6.0 ly6 with aftermarket vvt cam. The OS is a '10 e67 out of a '10 Colorado with a 5.3.
I plan on running a a ZR1 3 bar map because Im pretty sure itll bolt right into my ls3 intake manifold and plug in place of my current map thats for a colorado 5.3. Should just have to change the map settings.

I am running the colorado slot style maf/IAT should I delete that and wire in a screw in style IAT and run speed density?

Lastly on my editor all of my enhancements are grayed out, So it wont let me ungrade to a 3 bar OS. What gives?