I was having engine hestitation problems so I decided to clean my throttle bodies to see if it would help. When I look at my right side intake to take out, I noticed something odd....see below:



Notice the small compartment attached to the intake (it has white numbering). What is that? I don't see that on my left side intake. Is it a mod by the previous owner and how is it used? I bought my car used about 3 months ago.

My car is a 2007 G35 Sedan.

 

Yes, its stock. I think it helps dampen the sound.

 

ok, thanks

 

this is the silencer, yea . . it's stock.

 

ya normal and it looks like the breather for oil vapor return.