Specifications

8.4
Exhaust System
8.2 Oxidation, Catalytic
Converters
The material /...../ (see installation pages 8.1-8.3) bracketry of
the exhaust type, type of exhaust, connector system from
turbocharger outlet to the oxidation catalytic converters,
including the converters and muffler themselves, must not
be altered. Any alterations will invalidate EPA exhaust
emission certification.
8.3 Modifications of Exhaust
Systems Other Than Catalytic
Converters
– When modifying the exhaust systems other than the
catalytic converters, follow the guidelines below.
– Use only original parts for modifications to the exhaust
system.
– It is not permissible to change the length or installed
position of the flexible metal hose between the
exhaust manifold and the exhaust pipe.
– Do not reduce the free cross-section of the exhaust
pipe behind the muffler.
– Pipe elbow should not exceed 90°.
– Avoid additional pipe elbows.
– Bending radii must be > 2.5 d.
– Minimum distance from plastic lines, electrical
harness and spare tires:
200 mm for exhaust system without shielding,
80 mm for sheet metal shielding,
40 mm for sheet metal shielding with additional
insulation.
– Additional heat shield is required in the area of control
elements and the area of assemblies, attachments
and installed parts made from non-heat resistant
materials.
– No modifications are permissible to the exhaust
system from the engine to the rear of the catalytic
converter.