[Dmitry at Pelican Parts]

Hey George - I've attached a DIY article from our site that'll help you with the secondary air systems; the diagrams should help you - let me know if you have any other questions.

BMW E46 Secondary Air Component Replacement | BMW 325i (2001-2005), BMW 325Xi (2001-2005), BMW 325Ci (2001-2006), BMW 325ti (2001-2004) | Pelican Technical Article


-Dmitry