Guys get into way too much trouble worrying about this kind of thing.
The old rule used to be 3 days to text after the 1st date unless she reached out first. At the end of the day, that rule existed to admonish men who are overly thirsty and wanting to spam text a chick they just took out for the first time. Because that kills mystery and by operation, kills attraction.
However, if you are confident and the date went very well, my experience has been you hurt yourself more by simply disappearing completely without a trace for over a week after that. Carrying positive momentum is not a bad thing. No, you don't want to be overly available or spam texting, but disappearing many times can be sniffed out by these women as game playing and hurt you in the long run -- mostly because you leave the door open for some other guy to come in.