help with ser spec v 02 header

[specina21]

hi everyone im new here i have a sentra 02 ser spec v i just got a dc sport header but when i installed it it gave me a check engine light now i know people have said to put a spark plug defouler ot move the o2 sensor to the midpipe in the cat but dc header removes the cat and i dont know what a spark plug defouler is can anyone help me thanks!

[nametakennow]

Autozone will know what it is.

Run a search, it will explain how to set it up.

If you're still unsure, just have the 2nd O2 sensor moved back behind the cat. The first O2 will stay where it is. Normally the second is behind the precat (which is incorporated into the exhaust mani) in the midpipe, not the main cat between the midpipe and the catback.

[VMPhil]

if you have trouble making your own check ebay. they may be selling them on there, thats how i got mine like 2 years ago.

[dnlx5]

hey im a 240 guy and im sry this is a lil off topic but do you know the diameter of your primarys? mebe your collector IF I remember its a 4 to 2 to 1 setup right? i just got an na sr and i need to custom fab some rwd headars thanks sry to thread jack