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Thread: Car running poorly in closed loop, change o2 sensors multiple times, tune attached

  1. #1
    Potential Tuner
    Join Date
    Feb 2014
    Posts
    4

    Car running poorly in closed loop, change o2 sensors multiple times, tune attached

    ~delete
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    Last edited by Lexxanich; 08-07-2014 at 11:29 PM.

  2. #2
    Potential Tuner
    Join Date
    Feb 2014
    Posts
    4
    Anything?

  3. #3
    Senior Tuner
    Join Date
    Feb 2009
    Posts
    1,931
    Your tune is not speed density or open loop. You have a wiring issue if your sensors are for sure good. You need to read some how too's as this tune is junk.

  4. #4
    Senior Tuner
    Join Date
    Nov 2002
    Location
    Central Florida
    Posts
    2,503
    Some things will just make O2 sensors behave badly, like
    long tube headers. If you wanted relevant help you should
    at least put mods in .sig or the post.

    Putting new canaries in the coal mine doesn't solve the
    monoxide problem, like.

  5. #5
    Advanced Tuner
    Join Date
    Mar 2011
    Posts
    384
    also a log would help
    My setup is a 356ci with a 260/268 (212/218 at .050 lift) duration cam with aluminium corvette heads and flat top pistons running 11.3 comp. ratio. with tuned port injection and vortec crank pick up and dizzy running a 411 pcm and 60lb bosch injectors, 1.6 ratio roller rockers. For transmission its a 4l65e built with the monster in a box mega ss kit. All in a 92 chevy ext cab 4x4 pickup with a 98 cab now installed with a third door! running only e85