Crankcase Breather, Good or bad? Options

[yfn16]

I've seen and heard contradicting opinions on this topic, so I am just wondering... Will installing a crankcase breather on our motors cause any issues? Does it need the slight vacuum?

[Rawrssell]

I recently installed an Injen short ram and on the C.A.R.B approved set up, the breather hose is removed from the TB and plugged into the short ram. The only problem is that now it seems there has been a larger amount of blow by recirculating (I know this is by design for California's EGR) so I bought a Spectre breather filter, took off the hose connecting the TB to the crankcase, placed the filter, and connected the hose from the TB to my short ram. Doing this reduces the annoying blow by gunking up the TB and feeding cleaner air. Now if you are like me and live in California, this is an illegal mod since the vacuum routing has been tampered with, but if you are on good terms with law enforcement then you will not have to reroute the correct vacuum lines until smog.

As for any power increase; marginal. The fact that the blow by and crankcase pressure are no longer recirculating helps free up some withdrawn power. *Anyone please correct me if I am wrong*

I hope this answers your question! :]