996 question

I've heard that there was a bump in engine power and reliability in the 996 what year was it? Was it 2001?

 

Started with MY2002. The engine power went up to 320 BHP.

From wikipedia:

The Carrera and Carrera 4 underwent revisions for model year 2002, receiving the front headlight/indicator lights which were first seen on the Turbo version two years earlier. This allowed the 911 to be more distinguishable from the Boxster. A mildly revised front fascia was also introduced, though the basic architecture remained.

Engine wise, displacement was 3.4 L and power 300 PS (221 kW), increased in 2002 to 3.6 L and 320 PS (235 kW).