if you put another breather on the hole on your intake you will run very lean. It's not a good idea to introduce more air after the MAS. The MAS reads the air coming in and adjusts your timing accordingly. If you let more air in after that your engine will kinda studder...which is BAD

 

would'nt it draw the same amount of air wether it was drawing dirty air from your engine or clean air through a breather. I would assume the amount of vaccum would be the same because there is no valve or metering device there. I mean the MAS doesnt read the air coming out of the engine either and since it is blow by the amount of air from the engine would be inconsistant also.

 

Doesn't a breather make it emmissions illegal ? Maybe somebody can check that.
The biggest issue that somebody mentioned is that plugging up the PCV connection allows sludge to build up in there.
Feel free to double check that, I cant google it til later tonight.

 

^ Its illeagle here, although If you use your vacume hose and bring the breather further away from the engine and hide the breather a bit you can get away with it.
I really don't suggest breathers for a N/A 4G94 engine there is really no point and IMO it doesnt look better, it looks worse.

 

the only benifit you would get if u were running a Turbo because a turbo increase the pressure in the head, thus blowing out more oil than N/A....but if u go turbo i would recommend a catch can.....for N/A the amount of oil that blows by is not alot.

 

bump

 

breather filter on an NA pretty much stock car= waste of time and money.

 

Ok, its a waste of time. Now what about the ideas on the topic that I posted.

 

the little cap is called a vacuum line plug, and you can use the breathers fine as long as you adjust the intade idle screw for the increased air flow. i did this by turning the idle screw tight and then unscrewing it three turns, Idle is smooth, no jumps or shudders,and throttle responce is great. on a NA engine. only a waste of money if you don't know how to utilze it properly.