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| motorsports: worldwide. To do that, we've used a range of environment-friendly |
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The 911 GT3 complies with the stringent Euro 4 exhaust emissions standard as well as all emissions legislation worldwide. To do that, we've used a range of environment-friendly technologies, including twin metal-based catalytic converters. The exhaust gases expelled from each bank of cylinders are monitored using twin Lambda probes. This information is fed back to the engine management system and used to modify the air/fuel mix. A further pair of sensors*, one for each bank of cylinders, is used to monitor the efficiency of the respective catalytic converter.
*Not featured in markets with leaded fuel.
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