what are they and what do they do, where do they go?

they look like mini air filters....what are they?

A breather is your air filter box, that is just a slang word for it.It enables your motor to breathe in clean air so it can run properly.

People also put beathers on the vacuum hose that goes from the valve cover to the intake piping. If you get an aftermarket intake, sometimes they don't have the correct fitting to reattach that hose...so you put a beather on the hose so stuff doesnt get sucked up into the engine. Not sure what else they are used for.

http://www.autozone.com/servlet/UiBroker?U...7EAPC%7C%7Etrue

that thing?

yup thats it.

what i have heard is those breathers are used to keep the fumes from your engine crank case from being being sucked into your intake agian.

Supposely its like a performance increase because it releases this hot case air into the atmosphere rather then entering your cold air intake.

you understand what i'm saying.. am i making any sense.. man i'm tired.. someone give a better explaination.

I've seen people use a breather rather than a pcv valve. I don't see the point though, the pcv is afterall there for a reason.

I put one on my Celica, lasted about 5 minutes then took it off. Car ran like crap! I would say leave the OEM setup there and dont use a breather.

J-

I'm using a breather on my 4A-GE. We initially had 3/8" fuel line coming from the valve cover to the intake tube, then decided to just use a breather, and it didn't change anything performance-wise.

What's interesting is that if there's nothing on that tube on my car, there's a really loud pulsed whistling sort of sound. >>

-Coomer+Jul 2, 2004 - 3:30 PM