Be honest, especially about yourself to yourself. Hypocrisy and denial are two big turnoffs -- fundamentally dishonest folks cannot be trusted enough to engage. Also, if you seem like you believe a lot of things that aren't true, the information you provide can't be trusted either... so how is there supposed to be a discourse? We'd have to vet everything you say.
Don't create drama or leave Ti folks feeling like you're going to drag them into a morass of emotionalism. The caveat is that if you are fundamentally honest and can admit you create drama, that helps a bit because you're aware of it, so then you can both mediate the impact of that. It reduces the impression that our freedom will be inhibited in some way by you, to either come and go OR to speak our mind without a lot of needless drama. It comes off as dangerous to autonomy, so one stays away.
Be open -- to hearing new ideas but also to talk about deep and/or even personal topics. Everything tends to be rather detached for Ti so we can talk about some things that leave some people feeling uncomfortable. We typically won't push someone to talking about that stuff, but it does leave us with not wanting to approach the boundaries and might lead to some shutdown in communication.
Don't take everything deathly seriously. A lot of stuff in life is both serious and funny due to inherent inconsistencies or weirdness, if you step outside of it. Laughing at something doesn't mean you disrespect it, it just means you can see it from various POVs. Also, don't think a Ti person is disrespecting something by challenging it or laughing about it, sometimes it feels very personal deep inside but also funny and/or it's a way to deal with the seriousness of it.
Try to understand even if you don't. Ask questions, at least up to the point where someone says they don't want to discuss it anymore. i.e., don't pester or seem invasive, but show curiosity about things you don't understand, and ask for more explanation if you don't understand.
I dunno, it's a two-way street. Ti folks have had to learn to navigate the rest of the world but we have our own pitfalls as much as anyone else that can take time to figure out -- usually in terms of needing to phrase things in ways that engender conversation rather than shutting it down, learning about productive boundaries, and seeing value / finding acceptance in other values besides raw honest discourse. But basically you want to have the conversation seem like it has a possibility of being meaningful, that you care about the interaction, and that you are not using it as a form of control.