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Check Engine Light Question

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Old 05-13-2018, 11:44 PM
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TexanKen
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Default Check Engine Light Question
Recently.updated my 2016 Z51 with Kooks long tubes and off road catless X pipe. I now have a constantly illuminated "Check Engine" Light as well as an "emissions sysrem" error on my monthly GM email report. Is there anything I can do to eliminate one (or both) of thess?
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Old 05-14-2018, 04:23 AM
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Scottcolem
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get a tune
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Old 05-15-2018, 10:55 AM
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babigguy
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if you are not tuned you will have this and probably run very rich on your fuel mix.
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Old 05-15-2018, 11:37 AM
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davepl
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How's the sound? Much different?
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Old 05-19-2018, 06:27 PM
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lakemg
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You can install Kooks green cats and get by without a tune unless you also have an aftermarket air filter and/or intake system.

https://www.kooksheaders.com/green
Last edited by lakemg; 05-19-2018 at 06:28 PM.
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Old 05-19-2018, 07:56 PM
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Dcasole
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It's your rear 02 sensors, you need a tune ...
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