Results 1 to 15 of 15

o2 delete question

This is a discussion on o2 delete question within the General Help forums, part of the LSx Technical Help Section category; Going to be installing ps lt headers, tsp ypipe and exhaust system for next spring. As of now the car ...

  1. #1
    Member
    Join Date
    May 2009
    Location
    Manitoba
    Posts
    139

    blue
    1998 Trans Am ls1

    o2 delete question

    Going to be installing ps lt headers, tsp ypipe and exhaust system for next spring. As of now the car has no cats, and Iam assuming the previous owner has pulled the bulb from the ses light. Wanting to do the egr delete and o2 delete as well. Just a bit confused with the o2's, can i get rid of all 4 of them or just the 2 after the cats? I will be getting a mail order tune after install. Thanks in advance

  2. #2
    Yeah baby! Yeah! silverWS6's Avatar
    Join Date
    May 2009
    Location
    okc
    Posts
    2,571

    Silver 2002 WS.6
    Red 1989 Formula

    I think you have to keep the first 2 but you can delete he rear o2's

  3. #3
    Member
    Join Date
    May 2009
    Location
    Manitoba
    Posts
    139

    blue
    1998 Trans Am ls1

    right on, sort of what i thoght, but when it comes to electronics, iam screwed. cant wait for the header install!!!

  4. #4
    Bone it like you own it FORD RECOVERY EXPERT's Avatar
    Join Date
    Sep 2005
    Location
    TEXAS... U mad?
    Posts
    6,158

    Black / Stryker Blue
    2K WS.6/ 2K9 G8GT

    does your ses light come on with the key and then go out? or never seen it altogether?

  5. #5
    Member
    Join Date
    May 2009
    Location
    Manitoba
    Posts
    139

    blue
    1998 Trans Am ls1

    i can turn the ignition on without starting it, and nothin... and have never seen it on, i can see where it should be tho. Iam assuming the previous owner yanked the bulb when he removed the cats?

  6. #6
    Senior Member Redphoenix1998's Avatar
    Join Date
    Apr 2002
    Location
    San Jose
    Age
    36
    Posts
    1,897

    Red
    1998 Pontiac Trans Am

    You can delete all 4 if you go with a speed density tune. At that point you don't need your 4 O2's or MAF. It is common to just delete the rear O2's

  7. #7
    Senior Member Redphoenix1998's Avatar
    Join Date
    Apr 2002
    Location
    San Jose
    Age
    36
    Posts
    1,897

    Red
    1998 Pontiac Trans Am

    And yes the bulb is dead. You're supposed to get a 30 second bulb check

  8. #8
    Member
    Join Date
    May 2009
    Location
    Manitoba
    Posts
    139

    blue
    1998 Trans Am ls1

    good info! and what exactly is a speed density tune?

  9. #9
    Senior Member Redphoenix1998's Avatar
    Join Date
    Apr 2002
    Location
    San Jose
    Age
    36
    Posts
    1,897

    Red
    1998 Pontiac Trans Am

    A speed density tune is basically a locked in A/F ratio to the PCM where the PCM calculates fuel and spark based on vacuum. So basically you now utilize the map sensor not the MAF. So instead of reading and reporting to the PCM Mass Air, you get vacuum. More reliable, less shit to break, and no more MAF issues. Only down side is every mod you do, you need a retune. So be sure you do this after a big set of mods. A lot of cars today use Speed Density. Chryler Corp is the biggest. Our cars come with both Map and MAF. The map in the current setup is only for EGR purposes and MAF is the main calculation factor. Speed density, no more MAF, all calculations done my MAP and other sensors

  10. #10
    Member
    Join Date
    May 2009
    Location
    Manitoba
    Posts
    139

    blue
    1998 Trans Am ls1

    well said, thanks. kinda over my head tho. lol

  11. #11
    Senior Member Redphoenix1998's Avatar
    Join Date
    Apr 2002
    Location
    San Jose
    Age
    36
    Posts
    1,897

    Red
    1998 Pontiac Trans Am

    NP Yeah it's pretty crazy stuff. Leave it for the tuners trust me on this. It gets nasty trying to understand how the system works

  12. #12
    Member
    Join Date
    May 2009
    Location
    Manitoba
    Posts
    139

    blue
    1998 Trans Am ls1

    to sum it all up, i can tune out and remove the egr and rear o2's. Any other issues or concerns with this setup? Is there such a thing as a cat delete as well?

  13. #13
    Senior Member Redphoenix1998's Avatar
    Join Date
    Apr 2002
    Location
    San Jose
    Age
    36
    Posts
    1,897

    Red
    1998 Pontiac Trans Am

    Yes, you can delete your EGR, AIR, CAT, O2's MAF, you name it. My setup right now is a speed density tune. No Cats. No O2's, No MAF, AIR or EGR and I have a 98

  14. #14
    Senior Member Redphoenix1998's Avatar
    Join Date
    Apr 2002
    Location
    San Jose
    Age
    36
    Posts
    1,897

    Red
    1998 Pontiac Trans Am

    I've been running that way for about 10 years now so guys know how to do it. Just finding the right tuner to perform it. Ask guys from your area and find a respectable tuner. I wouldn't do speed density though until you have a good H/C in the car. Standard tuning, they can delete your rear O2's, AIR, and EGR

  15. #15
    Member
    Join Date
    May 2009
    Location
    Manitoba
    Posts
    139

    blue
    1998 Trans Am ls1

    all your info is much appreciated!! thanks again!!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Quick Question EGR/AIR Delete
    By ChevyZ76 in forum Camaro / SS
    Replies: 10
    Last Post: 02-15-2017, 08:56 AM
  2. Header Question : EGR delete? o2 ext ??
    By 5abivt in forum External Engine
    Replies: 8
    Last Post: 03-18-2010, 11:43 AM
  3. AIR Delete Question
    By Sweet Chops in forum Computer & Tuning
    Replies: 20
    Last Post: 04-14-2009, 04:48 PM
  4. Resonator Delete Question
    By surfinjoe in forum GTO
    Replies: 40
    Last Post: 08-26-2008, 08:21 PM
  5. I have a serious question. Mods please dont delete.
    By FSANE in forum Almost Anything Goes
    Replies: 44
    Last Post: 08-03-2006, 02:24 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •