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Thread: torque #'s are very odd dyno and tune attached

  1. #1

    torque #'s are very odd dyno and tune attached

    any thoughts on was this looks this way
    not spinning and clutch was holding
    walbro 465lph pump
    E85
    2000cc injectors (full return style system)
    408ci(stroked 6.0)
    ls3 style heads 11.8 comp

    Attachment 38049
    Attachment 38048
    Last edited by 260B4U; 02-10-2013 at 06:54 PM.
    2002 Z06-408LQ4 583RWHP 496RWTQ on E85 / 919RWHP 895RWTQ @300 shot

  2. #2
    Advanced Tuner
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    Do you have a log?
    1997 Trans Am WS6 - LS1 swap - TR224 - Pacesetter Longtubes - Yank SS3600
    - 3.42 Moser 12 bolt - Wilwood Brakes - HP Tuners tuned - P1SC-1 Procharger

  3. #3
    Roads still a little wet I'll post a log today any thing specific you want to see
    2002 Z06-408LQ4 583RWHP 496RWTQ on E85 / 919RWHP 895RWTQ @300 shot

  4. #4
    Advanced Tuner
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    I meant from the dyno pull. A wot pull showing the normal stuff make sure to log airflow,timing,knock
    1997 Trans Am WS6 - LS1 swap - TR224 - Pacesetter Longtubes - Yank SS3600
    - 3.42 Moser 12 bolt - Wilwood Brakes - HP Tuners tuned - P1SC-1 Procharger

  5. #5
    Senior Tuner edcmat-l1's Avatar
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    Quote Originally Posted by 260B4U View Post
    Roads still a little wet I'll post a log today any thing specific you want to see
    A log from that dyno pull.

    EFI specialist
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  6. #6
    i dont have logs from that run tuners laptop was used but here some from today

    Attachment 38059

    Attachment 38060

    Attachment 38061

    Attachment 38062

    Attachment 38063
    2002 Z06-408LQ4 583RWHP 496RWTQ on E85 / 919RWHP 895RWTQ @300 shot

  7. #7
    and one more
    Attachment 38064
    2002 Z06-408LQ4 583RWHP 496RWTQ on E85 / 919RWHP 895RWTQ @300 shot

  8. #8
    Any one ?
    2002 Z06-408LQ4 583RWHP 496RWTQ on E85 / 919RWHP 895RWTQ @300 shot

  9. #9
    i guess nobody has a clue
    the motor is sound comp and leak down is good. "fresh motor"
    its got to be in the tune ?
    2002 Z06-408LQ4 583RWHP 496RWTQ on E85 / 919RWHP 895RWTQ @300 shot

  10. #10
    Senior Tuner edcmat-l1's Avatar
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    Quote Originally Posted by 260B4U View Post
    i guess nobody has a clue
    the motor is sound comp and leak down is good. "fresh motor"
    its got to be in the tune ?
    Kinda hard to make an assessment without a data log of the run. Could be the tune, could be totally unrelated to the tune.

    The couple data logs I looked at, did not have a steady 3rd or 4th ger pull that even closely resembled a dyno run. Even if they did, there's no telling if the load was the same as the dyno.

    EFI specialist
    Advanced diagnostics, tuning, emissions
    HPtuners dealer and tech support
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  11. #11
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    just curious, since they have and stored all the data can they add a MPH graph?

  12. #12
    Tuner
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    Four major dips; just looks like where you were shifting to me.
    Jason
    01 Camaro Z28 LS3 525hp Built 4l60e
    74 Camaro Z28 LT 355 fully forged roller with t56 4.56 gears

  13. #13
    Quote Originally Posted by kyphur View Post
    Four major dips; just looks like where you were shifting to me.
    This was on a dynapak dyno 4th gear pull
    2002 Z06-408LQ4 583RWHP 496RWTQ on E85 / 919RWHP 895RWTQ @300 shot

  14. #14
    I think it might be a fueling issue it seem to corelate to a fuel pressure bouncing e en though the wide band at tail pipe doesn't register a change in AFR
    2002 Z06-408LQ4 583RWHP 496RWTQ on E85 / 919RWHP 895RWTQ @300 shot

  15. #15
    Tuner in Training TeamLS's Avatar
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    is it just me or does anyone else think in log 8 his AFRs are everywere but were they should be?
    HJ ute-LS1-Cam-Nitrous-9"
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  16. #16
    Quote Originally Posted by TeamLS View Post
    is it just me or does anyone else think in log 8 his AFRs are everywere but were they should be?
    where do we think they should be? i was aiming for .78-.81
    2002 Z06-408LQ4 583RWHP 496RWTQ on E85 / 919RWHP 895RWTQ @300 shot