Wee Man

Some nice bikes on the stand

Bottom port should be connected, it needs to get a boost reference to allow actuator to do its funky stuff.

Have you got any of the ports connected to anything? https://www.turbosmart.com/wp-content/uploads/instructions/External_Wastegate_EWG_38mm_40mm_45mm_50mm_50mm_GenV_Standard_Motorsport_Fitment_Instructions/English.html

Is that battery tray/holder setup welded or bolted to the subframe? If bolted, you could just ditch it, fit an OEM battery holder etc and airbox will go on.