2014 911 GT3 Section 2 9/12/13 7:51 AM Page 31
911 GT3 (991) 2.6 Exhaust system The sports exhaust system of the 911 GT3 is similar to the previous model. The 911 GT3 (991) also has high-performance manifolds, two close-coupled catalytic converters integrated in the manifolds as well as two switchable front mufflers and one rear muffler with two central tailpipes. The high-performance manifolds have been redesigned and are now even more efficient thanks to the merging of the individual tailpipes to achieve improved air flow characteristics.
DME Engine electronics
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Emission control/catalytic converter A ceramic catalytic converter with 400 cells is installed at the end of the exhaust
Manifold with catalytic converter
1 - High-performance manifold 2 - Broadband oxygen sensor (LSU) upstream of catalytic converter 3 - Catalytic converter 4 - Two-point step oxygen sensor (LSF) downstream of catalytic converter
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manifold on each cylinder bank for emission control.
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