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Old 11-16-2012, 07:44 PM
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540iman 540iman is offline
resident, old fart
Location: N.W. Indiana
Join Date: Sep 2008
Posts: 1,873
Mein Auto: 2002 540i sport
You can not delete the secondary air system. Some will say there is a "Sim" made for this purpose. You will be far better off to give in and keep it functional. it isn't that expensive. Most all cars (Audis, VWs, M-B, etc.) have a version of the secondary air system just for emission purposes. See what is wrong with yours before you give-up. The pierburg pump can be for an Audi and is about $107 on Amazon or nearly $300 for a BMW plus $100 valve. Want to delete it? Go for it. Read up on "SAP delete"
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