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The 911 | Engine
Exhaust system.
The stainless steel exhau st system
comprises two independent
and separate exha ust tracts. Its
catalytic con verters are highly
temperature-resistant, and heat
up rapidly for effective
emissions reduction.
Thanks to advances in
emissions
technology, the
converters are able to
meet
strict emissions standards, such
as LE V II/LEV in the USA.
Using stereo Lambda control, two
sensors continuously monitor
the exhaust gas composition
for each exhaust tract. A further
sensor monitors the efficiency
of the catalytic converters.
In addition, a sport exha ust
system i s available as an
option. This can be activated
as desired using a button
on the center console.
911 Carrera S exhaust syste m
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