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19.01.2005: Old and new
The old downpipe compared to the new one. The flex joint on the old pipe rusted so much that it almost separated from the lower section (no wonder I had such a leak), and it only took me a slight pull to tear it off completely.

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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