The lightweight sports exhaust system in the new 911 GT3 consists of two front silencers, two catalytic converters and one rear silencer. The system’s large volume reduces exhaust back pressure to increase power.
Each of the two banks of cylinders has its own separate exhaust tract. The position and design of the catalytic converters enable rapid warm-up to ensure effective emissions control.
Thanks to its advanced exhaust technology, the new 911 GT3 meets the strict requirements of international emissions standards such as Euro 5 in Europe and LEV II in the USA.
An oxygen sensor system monitors both banks of cylinders separately. Two corresponding oxygen sensors work in conjunction with the engine management system to adjust the air/fuel mixture individually for each bank of cylinders.
An additional oxygen sensor in each exhaust section monitors the conversion of pollutants in each catalytic converter.*
What that means for you is more power – but not at the expense of the environment.
*Not in markets with leaded fuel.