Header question

[m_240sx]

So I'm installing a obx header on my 92 240sx coupe. (Ka24de) I removed the first o2 sensor then I looked down and noticed a pipe going to the mine pipe. Ill attach a photo of what I'm talking about.

My problem is I don't know what its for and my header doesn't have a bung for it.

[m_240sx]

well doing more researching I found out it the AIV and it can be removed.

1989-1994 240sx: AIV PAIR valve removal tutorial : Nissan Online Mechanic (http://forums.nicoclub.com/1989-1994-240sx-aiv-pair-valve-removal-tutorial-t254273.html)

so I guess Ill do that.

[Rich260z]

There is an actual part number for a bolt that fits in that spot. of you can just weld it over. Don't forget about the egr tube also.