Neat. So how to do plan to tune it? Clamp MAP signal sent to the factory ECU then let the secondary system enrich above that?
I wanted to do something similar with my Subaru, and use an Aquamist 2D type injection. Batch mode should be fine.
2009 BMW 135i 6MT Sport, AFE intake, Cobb AP, Apex 18x8.5+9.5, 255/275 PSS