Exhaust System And Emission Control
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Porsche 911, 2012 Porsche 911, 2011 Porsche 911, 2010 Porsche 911, and 2009 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
| Designation | 997 GT3 and GT3 RS | 997 Turbo |
|---|---|---|
| Exhaust system structure | Three-way catalytic converter, positioned close to cylinder head, two front silencers switched via flaps, opening out into one rear silencer | Twin-pipe, three-way catalytic converter exhaust system, rear silencer |
| Emission control: | ||
| Euro 2 | - | |
| Euro 4 | Additional secondary air system and post catalytic control (4 probes), EOBD | Continuous stereo oxygen sensor closed-loop control, twin-pipe catalytic converter system, EOBD |
| USA LEV | Additional secondary air system and post catalytic control (4 probes), OBD II + ORVR | Continuous stereo oxygen sensor closed-loop control, twin-pipe catalytic converter system, OBD II + ORVR |