The OEM Bosch pump will die in 2 years, based on what I've read here. The limp-home mode isn't that bad. You can drive safely, its just slower.

I resolved my previously mentioned launch acceleration issue by resetting the computer:
Turn key to on
Push throttle pedal down all the way for 5 secs
With pedal still down, turn key to off but leave key in ignition
Release pedal
Wait 2 minutes
Start the car and drive.

I'm under warranty so I'll get another OEM pump, but once the coverage expires I'll be ordering a Johnson unit.