Originally Posted by Johnny N
I’d like to see some actual numbers on the air flow between k&N filters vs paper filters. Maybe you can supply us with the flow bench results

Let me see if I can find them. I saw a set of tests done on larger ones (for the 03-06 Duramax) and the K&N had both the worst flow and let the most dirt through. It was 3-4 years ago.


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