You get (more or less) the same benefits from a catch can. In fact I intend to replace my breather filter with a catch can at some point. The only difference is that the crank case gases are vented into the air instead of back into the intake air to be ignited again. The idea is that any vaporized fuel or oil that did not burn on the first time through the combustion chamber will burn the second time through, thereby reducing the amount of **** your car puts into the air.

You're better off plugging the intake nubbin than putting another filter on it. I don't remember where it is in relation to the MAF, but putting a filter on there may cause unmetered air to enter the engine (thus causing a lean condition).

On an aside: Installation of a breather filter is grounds for automatic failure of inspection in many states.

 

when i put a breather on, my car started acted weird and the engine would keep cutting off. I dont know what caused it but when i put hose back up there it went back to normal.

 

If you didn't plug the intake side, it's probably what I described in my last post. Idle is very sensitive like that. I'm not certain if the Lancer TB is open at all during idle or if the IAC bypass provides all the air, but it's possible that's the reason.

 

especially in cali, cops make you pop the trunk and if they see that thing, TICKET!!!

 

did you say trunk? dont you mean hood?

 

I don't think that you have to comply, but I could be wrong. And yeah, I'm guessing you mean hood because there's nothing illegal about carrying non-compliant car parts in your trunk.

 

^^^ whoops, ... got me.