In the write up of putting the h23 IM on the f22 engine it mentions :
- IAB valve actuator – you can use the IAB control box and wire it to pin A17 on the EX ecu (PT6) or you can do it like I’m doing and get a vacuum line from the nipple of the diaphragm and connect it to the nipple on the back drivers side nipple (where the IAB control box would usually go).

Can someone expalin how this is done?

 

what do you need explained it tells you righ there

you can use the IAB control box and wire it to pin A17
or
get a vacuum line from the nipple of the diaphragm and connect it to the nipple on the back drivers side(where the IAB control box would usually go).