An SR22 pilot departing TEB climbed through the charted altitude when distracted by an over-boost condition.

Narrative

Departed TEB at dusk on IFR flight plan with a departure that required a climb to 1500 ft then a turn before continuing the climb at a distance from TEB. I had my radios and GPS set for the departure on an IFR flight plan. After takeoff received a different departure control frequency from tower than the clearance; switched to departure reported climbing to 1500 ft; the restriction altitude. I then received an over-boost indication on the MFD for the engine; adjusted the power and received a call from departure that I was at 2000 ft (500 ft above the restriction). I pulled the power way back and dove in VMC to 1500 ft and turned to the required heading. I then received a call from ATC that I had caused a loss of separation at EWR. I was at 2000 ft for a very short period and I did not have any adverse indications on the installed Skywatch equipment (TCAS). The distraction of the over-boost indication on the engine; a minor issue; caused the major issue of busting the altitude. Keep in mind the airspace and the priorities. A minor over-boost should not have kept me from stopping the climb. This was caused by two minor distractions; the frequency and the over-boost.