Sorry for double posting but i need an answer quick. I just took out my dc header and i'm about to put in my jg header with modded collector. i had a o2 bung welded on the jgheader, but now there is no o2 bung on the dc header. so i'm have a bung in the jg header, without having any sensors put in the jg header. I'm a newb, help????? Do i just get the o2 bung on the jg header weld in or just leave it open? Please help

 

I think your saying that you dont have a secondary 02 sensor, so just plug the bung that is on the header your putting on. Go to a parts store and bring the header, they will fix you up. If I have it all wrong, let me know, your post was kinda confusing. Ryan

 

I'm confused but generally speaking any competant exhaust shop should be able to weld or fabricate any parts you need to add an O2 sensor or plug the hole.