I recently installed the s&b CCV delete with the 90 and the little filter. As I’ve been looking online I saw a guy on YouTube say that if you do the delete and leave the CCV filter intact that sits on the head it will cause excessive crank case pressure because it no longer has the vacuum effect from the intake system. I can understand what is he saying but is this true and if so won’t that 90 and little filter leak oil all over my exhaust manifold if I gut the big filter.


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