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Thread: e67 Bank 2 Mis.. Losing my mind. Please give input.

  1. #1
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    e67 Bank 2 Mis.. Losing my mind. Please give input.

    We finished up a 13 Camaro LSA/6L80e swap. Motor is basically stock with an intake and a smaller upper pulley (10psi is what its making). The car runs and drives totally fine. HOWEVER, there is a small miss that happens randomly. You can hear it but cannot feel it. If you look at the log, everytime this blip happens bank 2 gets lean for a split second (2m20sec is a couple). I have done just about everything I can think of with 0 success. Any input is welcomed.

    So far I have..

    3 different sets of plugs
    2 set of fuel injectors
    Cut the coil pack and injector wiring out of another harness and ran it right from the pcm to another set of coils with new wires and injector clips.
    Another pcm
    Ran a ground from the pcm to battery.a
    Ran ground from main harness ground to battery.
    Smoke tested the intake, no leaks.
    confirmed fuel pressure at idle and drive.

    The only "odd" thing to me is that with this pretty much stock engine, it wants 30% more fuel pretty much everywhere with just the 4" intake and filter and slightly smaller pulley.

    02-mis.hpl052620.hpt
    Last edited by AlphaTuning; 05-26-2020 at 10:23 PM.

  2. #2
    Senior Tuner SultanHassanMasTuning's Avatar
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    did you try to the car in OL?
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  3. #3
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    Quote Originally Posted by SultanHassanMasTuning View Post
    did you try to the car in OL?

    Yes I did. I should have attached a OL log as its a little easier to see. I was trying to see if CL would mask or help the issue.

  4. #4
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    Can't look at the log right now, but is injector desoot disabled?

  5. #5
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    Quote Originally Posted by RobZL1 View Post
    Can't look at the log right now, but is injector desoot disabled?
    Yes it is

  6. #6
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    How about the fuel pump ?
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  7. #7
    Tuner in Training DanN's Avatar
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    Swap coils left and right and see if the miss follows?

    I am by no stretch of the mind a tuner (trying to learn a thing or two), but it seems to me that if the plugs are worth changing, so should the leads and coils, no?
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  8. #8
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    Quote Originally Posted by DanN View Post
    Swap coils left and right and see if the miss follows?

    I am by no stretch of the mind a tuner (trying to learn a thing or two), but it seems to me that if the plugs are worth changing, so should the leads and coils, no?
    We actually put a brand new set of coils on. no change. I am leaning more towards a fuel related issue as when the blip happens the bank 2 narrow band and wideband go lean for a split second