Audi Workshop Service and Repair Manuals

Removing and installing front exhaust pipe with catalytic converter

Removing –  Remove bolts -arrows-. –  Remove air ducts -1- and -2-.

–  Unplug electrical connector -1- at air mass meter -G70-. –  Loosen hose clip -2- to remove air intake hose. –  Move clear wiring harness at air cleaner housing and remove air cleaner housing -arrow-.

–  Unscrew securing bolts for turbocharger/catalytic converter -arrows-.

–  Release quick-release fasteners -2- and -3- and detach rear section of noise insulation.   Note

To avoid damage, the flexible joints in the front exhaust pipe must not be bent more than 10°. –  Loosen nuts on clamp -arrows-. –  Push the clamp back in order to separate the exhaust system. –  Detach front exhaust pipe with catalytic converter. Installing Installation is carried out in the reverse order; note the following:   Note Renew gaskets and self-locking nuts. –  Align exhaust system so it is free of stress → Chapter. Tightening torques

Component	Nm
Catalytic converter to turbocharger	25 1)
Exhaust pipe to catalytic converter	25 1)
l  1) Renew self-locking nuts.