I just bought a dc 4-1 header for my b16 from my friend. I believe it was off an acura (that doesn't matter does it?) There is a whole at the bottom of the collection tubes i am guessing it is the o2 bung. What i need to know is where do i get the second bung mounted. Also should i buy new gaskets for installation?

Any information or diagrams would be greatly appreciated.

 

try doing a search

and go ahead and get the gaskets.

 

did a search and none of the topics actually said where to have it mounted
thanks for the info

 

I have a DC 4-1 and I was advised not to mount them in the stock locations because the header is so thin there. IF someone trusts themselves to weld it for you...then put them in the stock locations. Other wise your other option is to put them both at the bottom...or wire them together and run one O2 sensor.

 

get your ecu reprogrammed to delete it and the knock sensor. i use a pr3 mugen with the same setup and it burns 3rd gear all day

 

Locations???? I only have one hole at the bottom, and if i dont mount it there what do i do with the hole??? lol also where do u get them mounted then?

 

Where did you have your ECU reprogrammed?

put a screw in the hole if you don't mount it there!!!!!!!!...heck fill it with bubble gum!
You have to mount them in a bunghole...cut it from your factory header.



[Modified by FitCRX, 2:35 AM 12/27/2002]

 

didnt get my ecu reprogrammed but hey your probably not talking to me lol.

 

so should i just see where the 2 are on my stock exhaust manifold and get them in the same spot?

 

YESSSSSS

 

THANKSSSSSSSSSSSSSS lol. Also to the guy that got the mugen program for his ecu. Where did you send it to get reprogrammed. I am thinking about doing that to. But I hear good and bad things about the mugen ecu.

 

Yeah the good is that it gives you more hp, bad less alot less gas mileage!!

 

if you are running a pr3 or pwo ecu then you can splice the second o2 sensor into the 1st one . do this right at the computer. this will eliminate you needing another o2 bung welded on your header. if you need the pin locations on the ecu please email me.

 

I want to do it the other way though. With the 2 o2 sensors.. What am i supposed to do with that exrta hole at the bottom though.