setting "up" the injector pump?

[coadman]

I have seen several 240D cars that have been advertised around the US, stating that they have had the injector pump "set up". I have a couple of questions about this. What exactly are they doing to the IP? Are they doing this (1) to make the car able to be driven at higher speeds, such as 70-75 mph instead of 60-65 mph. and/or (2) to compensate for stretch in the timing chain?
thanks,
Jim