2nd air pump

We are doing a vr6 swap to my mk3, its a 98 passat automatic motor. We have been told that we can take the secondary air pump out and just put a breather on there, Also been told we can leave it and put a breather on it too.. What to do? Let me know. My friend has a jetta same motor and doesnt...

I am doing a Vr6 swap in my Mk3 jetta, Its a 98 passat vr6 automatic, we where told we could take our secondary air pump off and just put a breather on there, then also was told that we could just leave it but put a breather on it too? so i was wondering whats what and if we REALLY need it or...