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19.01.2005: O2 sensor wire
Before lowering the pipe to the floor, unplug the rear O2 sensor (the middle connector on this picture). Remove the lower part of the connector from the housing and pull it down to let it hang free.

The downpipe installation procedure for a 1996 Saab 900 (also applies to the 1999-2002 9-3 models). The pipe is supplied by Jak Stoll. It is a 3" aluminized steel downpipe with a Magnaflow high flow catalitic converter.

Tools:

  • ramps or jack stands;
  • 13 mm socket or wrench: downpipe to turbo nuts, exhaust clamp bolts (a 1/2" worked better in my case due to a tighter fit);
  • 7/8" open end wrench: O2 sensors;
  • flat screwdriver: to release the tab on the O2 sensor connector;
  • a heavy tool or a length of pipe to bend exhaust hangers;
  • wire brush: to clean the joint between the flex pipe and the cat;
  • exhaust sealant: to seal the joint between the flex pipe and the cat;
  • torque wrench.

 

 
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