Name that port...plz

[JustJeff]

It's on a S5 JDM 13B
http://a2.sphotos.ak.fbcdn.net/hphotos-ak-snc7/s720x720/315330_2228524866993_1063965498_32344777_289271517 _n.jpg

I'm putting the final touches on my engine and I can't figure out what this port is for. I cant' find it in the FSM and the port is not tapped on an old N/A engine.

[FC Zach]

Knock sensor?

[RETed]

Knock sensor bung only used on S4 engines.
Knock sensor moved to rotor housing - above rear trailing spark plug? - on S5 engines.


-Ted

[FC Zach]

I believe your correct on the the S5 Ted