o2 sensor placement - Hyundai Performance Forums

numnuts · 10-19-2006, 11:50 AM

just a question for you guys with a header.....i need to have the 1st o2 bung welded.....do i just have it in the #4 tube without having to extend the wires or have it put down on the bottom where they all collect? if anyone has a pic that would be great also

Lilo Shark · 10-19-2006, 01:05 PM

i have mine at the bottom where they all collect but you'll have to extend the wires if you do that.

mello01tib · 10-20-2006, 02:39 AM

be sure u keep the o2 sensors in the right order. the one in ur stock header needs to be infront of the one thats further down. on my header i had 1 bung in it already so i put the one that was in the side of my stock header in that one and had another bung put in further down. i had to extend both but it wasent bad at all. pretty cut and dry.

alex01tib · 10-20-2006, 03:47 AM

better to put them where it sees all 4 exhaust pulses. mine is right after the turbo, so yours should be right after the collector.

numnuts · 10-20-2006, 07:08 PM

sounds good......i figured i would put it where they collect...and it seems as far as a CEL it's just luck wether you get one or not

Lilo Shark · 10-21-2006, 12:48 AM

when i first put mine in it didn't show up but i let my brother in law drive it and he kept killing the car that's what made it show up.

PlataShark · 10-23-2006, 01:24 PM

do any headers come with the o2 placement already for plug and go?

mello01tib · 10-24-2006, 12:07 AM

none that ive seen. most just have 1. but a muffler shop can put u one in for real cheap no biggi.

Lilo Shark · 10-24-2006, 11:59 AM

drill the hole yourslef and tkae it to the shop to get welded i did that and it only cost me $10.

numnuts · 10-25-2006, 01:00 PM

now i am curious.....i have the MBRP cat-back....pretty smooth sound. will adding the header make a HUGE difference in sound & power?