3.4 l engine performance kit / X51: Foreword: Notes
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Porsche 911, 2004 Porsche 911, 2003 Porsche 911, 2002 Porsche 911, and 2001 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
The following describes a performance kit for the 911 Carrera (996). A characteristic of the new engine is its continuous power development, particularly at higher engine speeds above 5,000 rpm. The only changes are modifications to the engine.