The ITB adapter has some threaded holes underneath. Every throttle will likely be plumbed to some distribution block, which will be fed to the MAP sensor. It will likely be connected to the idle control valve. I'll reconnect it in the future but it's disconnected for now. I'm even now https://manuelowza35678.nico-wiki.com/1306124/the_definitive_guide_to_toyota_4a_ge