Oh, he might know you're Kid Flash already. He's Tony Stark. [Sorry, Wally, she doesn't have good news on that front.]

What he might not know is that you're doing vigilante work, or that you're not registered, or anything in there. Play it cool. Right now, it seems like he's not endorsing how they've chosen to go about it, so he might not be the first to drag you in. But that doesn't mean that he won't involve himself and ask for a change. Or see if he can help them do it the right way.