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how many o2 sensors ?

Discussion in '7G Lancer and older - Performance' started by Evilution, Nov 21, 2010.

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  1. Evilution

    Evilution Member

    How many 02 sensors are on the WHOLE lancer exhaust system(header,downpipe,catback)? i'm curious because i am looking at ebay headers (because RRM dont make downpipes) i think im gonna try them out but 2 different header/dp have different number of o2 insertions.
     
    Evilution, Nov 21, 2010
    #1
  2. timschoeliertm

    timschoeliertm Well-Known Member

    i believe 2, one in headers, and one in the reguar cat, but i could be wrong
     
    timschoeliertm, Nov 21, 2010
    #2
  3. Evilution

    Evilution Member

    thats what i thought but the headers im looking at have 3..someonee that has installed header/dp let me know i need to know asap
     
    Evilution, Nov 21, 2010
    #3
  4. 1slowlance

    1slowlance Well-Known Member

    Our year Lancers only have 2 o2 sensors. Like tim said, one in the header, and the other connected to the cat further down the exhaust.
     
    1slowlance, Nov 21, 2010
    #4
  5. davidlanceres

    davidlanceres Well-Known Member

    yep 2, what header are you looking at? Post a link. Ive got an Ebay header+downpipe and it only has one o2 sensor hole.
     
    davidlanceres, Nov 21, 2010
    #5
  6. 1slowlance

    1slowlance Well-Known Member

    The header and downpipe should only have one spot for a sensor, I'm pretty sure. The other sensor is further back and almost on the cat I think.
     
    1slowlance, Nov 21, 2010
    #6
  7. Evilution

    Evilution Member

    I have a ebay n1 cat back which sounds decent, plus i installed a rrm test pipe in place of the second cat, i wanna get the 4-2-1 headers and downpipe from ebay so i can complete the exhaust system. I know there was a o2 hole on the test pipe/2nd cat...just wasn't sure how many o2 holes were on the header/dp but thanks guys.. you just have to be careful with the things you buy on ebay theres so much crap out there
     
    Evilution, Nov 21, 2010
    #7
  8. Evilution

    Evilution Member

    Last edited: Nov 21, 2010
    Evilution, Nov 21, 2010
    #8
  9. Jogenmaru

    Jogenmaru Well-Known Member

    it bolts right too it. You can substitute the cat for a test pipe or straight pipe as most call it. It is illegal and will make your car hella loud too.
     
    Jogenmaru, Nov 21, 2010
    #9
  10. davidlanceres

    davidlanceres Well-Known Member

    That is the exact same header I have. It bolts right up to the cat. You only have one cat. I have an OBX hi flow cat that replaced my stocker, but the downpipe bolted right up to that.
     
    davidlanceres, Nov 21, 2010
    #10
  11. Evilution

    Evilution Member

    awesome lol.. yea i bought a RRM test pipe to go along with the N1 ebay cat. surprisingly it sounds good in my opinion.. not to rice. i hope the headers will make it sound good as well. can't wait! haha
     
    Evilution, Nov 22, 2010
    #11
  12. Evilution

    Evilution Member

    anybody know the torque specs for the exhaust manifold?
     
    Evilution, Nov 24, 2010
    #12
  13. davidlanceres

    davidlanceres Well-Known Member

    No clue...I just tightened them lol. I am sure someone on here knows.
     
    davidlanceres, Nov 24, 2010
    #13
  14. Evilution

    Evilution Member

    lol that is what i am about to do...hows it sound?
     
    Evilution, Nov 24, 2010
    #14
  15. davidlanceres

    davidlanceres Well-Known Member

    Decent, I actually had a request for a sound clip on another forum recently to I took some vids, I'll post them up here after I upload them.
     
    davidlanceres, Nov 26, 2010
    #15
  16. davidlanceres

    davidlanceres Well-Known Member

    Last edited: Nov 28, 2010
    davidlanceres, Nov 28, 2010
    #16
  17. Evilution

    Evilution Member

    that sounds pretty good man. wish u had manual so i could of heard it open up a lil more lol..thanks!
     
    Evilution, Nov 29, 2010
    #17
  18. davidlanceres

    davidlanceres Well-Known Member

    lol yea me too!! tired of driving a pus-o-matic.
     
    davidlanceres, Nov 29, 2010
    #18
  19. Evilution

    Evilution Member

    so the ebay header i ordered came in...problem is..it was the wrong one! instead of the one where the flange is near the bend of the dpipe..i got the one were its 4-2-1 and the flange is where our cat would be on the stock manifold...im just gonna stick with it but i also noticed there is 3 o2 sensors on the header/dp...ugh im installing it tomorrow i hope theres no problems...ill let you guys know
     
    Evilution, Dec 7, 2010
    #19
  20. Jogenmaru

    Jogenmaru Well-Known Member

    the 3rd one is for a wideband sensor for easier tuning. use the 1st and 3rd one.
     
    Jogenmaru, Dec 7, 2010
    #20
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