What is this and what does it do?

[stup86]

When I bought my E30, it didn't have the standard airbox, instead it had a cone filter and look like this:



I noticed that there was a plug/lead hanging and can't find anywhere to plug. This is what I found:



It's attached to the same wire group as the one that goes to this:

.

So anyone know what it does and where is goes.

I think it might attach to the standard airbox.

Cheers,

Stu

[pac1982]

I think mine has a plug like this just hanging around, if your cars running fine dont worry about it

[cass1_5503]

i think its for cars with a catalytic converter doesnt go on the air box someone will corect me if im wrong

[sihooker]

It's something to do with emissions(charcoal filter?), probably for US spec cars..

[BEERBOY123]

I remember asking this a while ago and was told it wasn't supposed to plug into anything, so don't worry.

[mark_i]

^ correct. the plug connects to a purge valve that allows breather emissions to be collected inside a charcoal canister.

Only fitted to vehicles with catalytic converter/lambda sensor.

safe to leave hanging loose in engine bay.

[Brianmoooore]

If you look near the throttle body, you'll find a pipe going nowhere as well!

[xavier]

If you plug it into your left ear you can hear Radio Berlin

[TPS]

My touring has a cat. on it, & makes use of that connector, also as Brian says, a blanked off pipe on the bottom of the throttle housing on non-cat. vehicles, on mine a pipe leads to the carbon canister (I thought that was the fuel filter at first, lol)

[stup86]

My touring has a cat. on it, & makes use of that connector, also as Brian says, a blanked off pipe on the bottom of the throttle housing on non-cat. vehicles, on mine a pipe leads to the carbon canister (I thought that was the fuel filter at first, lol)

Good to know.

Cheers.

I thought that my car would of had a cat, feel a bit stupid now as I planned to remove it!!!!!!

[TPS]

The best way to tell is to look at the battery tray, if theres a black lead going to the exhaust, thats the 02 sensor leading to the CAT.