Following the recent refresh of the rear-wheel-drive Porsche Carrera and Carrera S, Porsche has announced a refresh for both the coupe and Cabriolet models of the all-wheel-drive Carrera 4 and Carrera 4S, as well, and now we’ve got the details :

Just like the standard 911s, the C4s features direct injection engines for a bump in power and fuel economy along with a drop in emissions.
In these new models, the all-wheel drive is now provided by an electronically-controlled Porsche Traction Management (PTM) system, which replaces the former all-wheel drive with its viscous multiple-plate clutch.
For 2009, the base Carrera’s 3.6-liter flat-six engine is tuned to produce 345 horsepower, an increase of 20 horses, and the 3.8-liter unit in the Carrera S jumps from 355 to 385 hp. Both engines are now direct-injection, and either can be coupled to a six-speed manual transmission or Porsche’s PDK seven-speed, double-clutch gearbox.

All C4 models can be distinguished from standard 911s thanks to wider rear fenders (by about 1.75 inches), a red reflector joining the rear LED brake lights, and LED daytime running lights up front as well as standard bi-xenon headlights.

Inside, the updated range adds the new Porsche Communication Management 3.0 (PCM) which features a touchscreen for simplified operation of the audio system as well as the optional hard-disk-drive navigation system, with integrated Bluetooth, USB and iPod connectivity.

The C4 models will start arriving at European dealerships at the end of October. The 911 Carrera 4 Coupe is priced at $81,700, while both the 911 Carrera 4 Cabriolet and 911 Carrera 4S Coupe are $92,300. The 911 Carrera 4S Cabriolet is $102,900.