However your ship starts to shake at a certain distance.
Soon the shaking shakes off equipment.
Soon the ship goes boom.
The distance can be increased to whatever we want with some fancy editing of the .exe file but it's really not a good idea.
I mean, chases could go on forever and just be bloody annoying.
Like Linkus said, systems can be enlarged.But yea, after 1000k, you blow up.
Funny thing i found, after 200-300k, the Sun disappears.
Longest i chased was a Smugger in Tau 23.Some 870K.Then he turned around.It takes about... 20 minutes.