TWC and Middle Pipe Installation Note

WARNING: This page is about a different variant/trim than selected.

NOTE:

When newly replacing the TWC or the middle pipe, place alignment marks on the new part in the same position as the removed part.

Install the TWC to the middle pipe using the following procedure.
1. Align the TWC and the middle pipe alignment marks.
  
  Fig 1: Aligning TWC And Middle Pipe Alignment Marks
  Courtesy of MAZDA MOTORS CORP.
2. Tighten the nut shown in the illustration.
Tightening torque

41-51 N.m {4.2-5.2 kgf.m, 31-37 ft.lbf}

Fig 2: TWC Nut
Courtesy of MAZDA MOTORS CORP.
Spray carbon remover (TB6601 or equivalent) on the flared section of the exhaust pipe.
Remove the carbon adhering to the flared section shown in the illustration using a nylon brush or sandpaper (No. 400 or equivalent).

Fig 3: Flared Section Of Exhaust Pipe
Courtesy of MAZDA MOTORS CORP.