Hey

I plan on bolting an ITR header up to my B16 and running a test pipe with 2.25 piping back to my N1 canister. The question I have is that the ITR has two places in which to put the O2 sensors and the test pipe has one as well. Since I only have 2 O2 sensors where should i place them. Both in the header or 1 in the header and 1 in the test pipe and weld a bung over one of the holes in the header. Any help and feedback would be greatly appreciated. Thanks all

 

the first one anywhere in header or in cat the secodn one after cat you have no cat so o2 simulator. or convert to obd1 and only deal with one.

 

so if i had a cat i would put one in header and one in the cat...right