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I have a 2020 sierra 1500 slt 5.3, want to put dual exhaust and high flow intake on it. do I have to do anything or will it self adjust to the modifications.
 

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No, you need to tune for the modifications in order to get the benefits from them.


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Yes, tune is needed. If you get the chevy performance intake, the new maf calibration is included.
 
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