this was in car and driver (I forget which issue):
Infiniti will begin offering an all-wheel-drive version of its hot-selling G35 sedan, fitted with Nissan's ATTESA E-TS (electronic torque split) system, in early December. Now comes word that an upcoming G35 platform mate, the Skyline GT-R, will get not only ATTESA E-TS but also a twin-turbo V-6 tuned by Cosworth. Producing in the neighborhood of 480 horsepower, the new V-6 features twin-turbo motor assist, a technology employed during off-boost periods say, when idling that temporarily turns the GT-R into a naturally aspirated car. Here's how it works: When off boost, magnetic valves open to form a bypass that redirects exhaust gas around the Turbos and directly into the precatalysts; when on boost, the valves close and channel exhaust gas into the Turbos. The net effect is a car reportedly capable of meeting strict emissions regulations around the world. Don't expect to see the GT-R, likely labeled an Infiniti when it comes to America, till 2005 or 2006.