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System Too Lean(Bank 1)??????????????????

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Old Mar 24, 2008 | 10:58 PM
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System Too Lean(Bank 1)??????????????????

What is the cause?
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Old Mar 24, 2008 | 11:00 PM
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i got the same code when I put in my aftermarket turbo back exhaust and when I installed my anti-fouler with 2 long foulers. I think what was happening was that my test pipe already had an extension outwards and using 2 anti foulers made the o2 too far away so it was not able to detect any exhaust fume readings. dont know if you are stock or not but it may be the problem.
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Old Mar 25, 2008 | 12:12 AM
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Originally Posted by benniboi08
i got the same code when I put in my aftermarket turbo back exhaust and when I installed my anti-fouler with 2 long foulers. I think what was happening was that my test pipe already had an extension outwards and using 2 anti foulers made the o2 too far away so it was not able to detect any exhaust fume readings. dont know if you are stock or not but it may be the problem.
The rear 02 has nothing to do with System Too Lean Bank 1.

Most of the time it is poorly scaled injectors, a intake that messes with the MAF, or an ignition issue.
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Old Mar 25, 2008 | 03:51 AM
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Wrong Forum?
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Old Mar 30, 2008 | 11:36 AM
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I thought its ECU related....
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