I have a B18C1
9.5:1 compression
Stage 1 cams (ITR specs except for increased VTEC)
ITR valves
ITR style intake manifold
AFI Turbo mini ram manifold with Tial 38mm (bad setup, cut rad support)
T3/T4 turbo
Yonaka 2.5" exhaust. No catalytic converter.
880cc peak and hold injectors
Hondata S300
PLX wide band with wide and narrowband outputs ran into the P72
In a 1993 Civic 4 door

What sort of basemap would I run to start it? Maybe a GSR map or a B16 map scaled to 1.8 liters and the injectors scaled up to 880cc?

I'm running the motor naturally aspirated for now. The turbo is installed, the charge piping is just not hooked up.

 

You're better off posting this in the Forced Induction forum. Truth be told just stick a basemap on it. It should only be used to get you to the tuner in the first place.