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      11-23-2011, 02:03 PM   #6
540gone
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Drives: '13 X3 3.5, '14 640 GC
Join Date: Feb 2010
Location: Houston, TX & Santa Fe, NM

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^ +1 Please explain how a system (like the Akra Evo) without anything in the primary cat position can pass the O2 sensor readiness test. It is my understanding that tunes just turn off the secondary O2 sensors to eliminate the CEL light. However, having the secondary O2 sensors "turned off" then causes the readiness test to fail.

I hope I am wrong, but have not yet found any solution except HFCs in the primary cat position (which is not Akra) w/ secondary O2 sensor extenders in place, and then it seems iffy.

Please advise if there is a new solution I don't know about, as I have a brand new Akra HFC / x-pipe in my garage that I have been hesitant to install since I'm pretty sure there is no way it will pass the O2 sensor readiness test.
Appreciate 0