New Catch Can upgrade

[Tony Davila]

Originally Posted by 5ABI VT

What are your guys thoughts on a pcv + catch cans + Piping from catch can to the header collectors (scavenging? forget the term for it).

I have already tried that, it doesn't work. I got 1" of vacuum at idle and nothing all the way to 7000RPM. It won't work with a muffler system because it creates some back pressure. I ran a vacuum gauge to the can and tried the EVAC header system. So forget about it and save your money. Engine vacuum or vacuum pump will work fine with any catch can that provides oil droplet separation.


I no longer have this B&B exhaust system, I have OEM with cutouts.