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      04-28-2010, 05:59 PM   #27
4th down; 4th quarter? Renegade.
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Drives: 09 SSII E92 M3; 12 AW X5d
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Originally Posted by MaxL View Post
By the way, are there any performance x-pipes that do not cause CEL (without tune that it)?
Technically, no xpipe will cause a CEL since it is after the primary cats. But I think you are asking about the full setup -including primary cats and xpipe. Active Autowerke claims that their system does not cause a CEL. However, I asked them what testing they did to make that conclusion (in their thread), and never received a response. The system just came out, so it will take a while for experiences to start rolling in...
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