Knowledgebase:
Why do you need to get headers and cats when camming?
Posted by on 04 August 2018 05:42 AM
Generally speaking, the reason is because the new cams will be making more power, as such, creating a greater volume of exhaust gases. Without the exhaust upgrade, power will be restricted, due to the restriction in exhaust flow that the factory system has with the upgraded cams.

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