In the pre-Force Awakens Glactic Empire, TIE fighters did not have hyperdrives and thus depended on carrier ships to jump to lightspeed.
Now in The Force Awakens
after Finn and Poe escape the Finalizer, Finn is yelling at Poe to get them out of the system. To do this at sublight speeds would be futile as the Finalizer or its TIEs could chase them down. So Finn must have wanted Poe to jump away at lightspeed.
Does this mean that First Order TIEs have lightspeed capabilities? Or is Finn just ignorant of the TIE fighters' lack of hyperdrives?