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  1. Thread: First Log

    by 5FDP
    Replies
    4
    Views
    38

    Open headers will skew the o2 sensors, they can...

    Open headers will skew the o2 sensors, they can not be used. It's best to disable the o2 sensors until the exhaust is completed.

    A stock engine, with stock tune with injectors changes running...
  2. Thread: AWD 4L80e

    by 5FDP
    Replies
    7
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    141

    A segment swap requires a write entire, so if you...

    A segment swap requires a write entire, so if you didn't do that you will need to for the 4L80e segment to work.
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    23

    Under the edit tab, use the gear tire ratio...

    Under the edit tab, use the gear tire ratio calculator.

    Plug in your new gear ratio and current tire size (it'll be the same), then make sure the auto scale transmission settings box is checked....
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    112

    I know exactly what you meant and you can't do...

    I know exactly what you meant and you can't do that.

    As I said the trouble code must be present for speed density. The idea of the whole thing is to have the code tripped so the computer defaults...
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    39

    An idle log doesn't really show anything, so...

    An idle log doesn't really show anything, so can't comment on much at all.

    Tune doesn't look bad, nothing really stood out as being completely wrong.
  6. Thread: Odometer

    by 5FDP
    Replies
    1
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    21

    Nope. Not with HPT.

    Nope. Not with HPT.
  7. I don't want to derail the thread but this video...

    I don't want to derail the thread but this video sums it up.

    https://www.youtube.com/watch?v=jjPeP_Nn2B4
  8. Needing back pressure is a myth. Why is this...

    Needing back pressure is a myth. Why is this still a thing?
  9. Replies
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    112

    You do not want to turn them off. If you want to...

    You do not want to turn them off. If you want to tune in speed density, the codes must be present. You can just disable the SES box if you don't want a check engine light on if you are running a...
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    It can't prevent a failure because that part is...

    It can't prevent a failure because that part is still in the engine. It can really help prolong the life of the lifter as it will no longer be able to function as designed but the part could still...
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    Disable the fuel trims and closed loop while...

    Disable the fuel trims and closed loop while logging it with the scanner. See what happens to the wideband reading.

    If it pegs out at +17 to +18 or more on the gauge, it needs lots of fuel.

    I...
  12. Replies
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    4,716

    Yeah, the high positive timing on the shifts will...

    Yeah, the high positive timing on the shifts will be a bad time lol.
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    112

    The MAF does not read because it's been disabled....

    The MAF does not read because it's been disabled. This current tune is setup to run in speed density without the MAF sensor. That is also why you have the codes P0102 and P0103 because the MAF sensor...
  14. Replies
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    112

    The OPEN loop EQ ratio is replaced by that ETC...

    The OPEN loop EQ ratio is replaced by that ETC Fuel Multi table on this OS. From the looks of it, that is already setup fine as it's requesting 1.00 (stoich) above 140 degree coolant temps. This...
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    112

    Post your tune. Tables are likely labeled...

    Post your tune. Tables are likely labeled different because it was tuned with an EFI upgraded file. It's going to throw you for a loop.
  16. Thread: cold start issue

    by 5FDP
    Replies
    2
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    54

    Having the computer think it's -38 outside all...

    Having the computer think it's -38 outside all the time is not helping you. Fix that before you even attempt to do anything else. You can't trouble shoot other possible issues when you have one big...
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    112

    If the trims are correct, it's very lean and you...

    If the trims are correct, it's very lean and you are making the computer compensate for that.

    You provided very little information here.

    LT1 with a torquehead doesn't really help us here as...
  18. Replies
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    4,716

    It's pulling down to -22 degrees of timing or you...

    It's pulling down to -22 degrees of timing or you are only allowing the computer to drop to +22 degrees of timing?

    You always want a timing pull on shifts. Part throttle can be more than full...
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    33

    The computers are pretty basic and if it was me I...

    The computers are pretty basic and if it was me I wouldn't suggest running one. You will have limited control over what you really want to do. An aftermarket controller will give you far better...
  20. Thread: 6l80e tuning

    by 5FDP
    Replies
    3
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    101

    For what it's worth I pretty much never touch...

    For what it's worth I pretty much never touch anything torque mngt related for the transmission and never have a one single problem with performance. I do not suggest changing much of anything TM...
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    Can't you just move the wideband to the rear...

    Can't you just move the wideband to the rear hole?

    It's not that much further and if you have no leaks, the readings on the sensor shouldn't change at all.
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    75

    My 5.3 had knock from the get go, doesn't...

    My 5.3 had knock from the get go, doesn't surprise me that you are seeing a bit of knock on your truck.

    Easy things to do are to adjust some of the power enrichment settings so it can happen...
  23. Replies
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    56

    PE happens when you tell it too. Just look at...

    PE happens when you tell it too. Just look at your power enrichment settings, whatever your delays are, that is what it will wait for to enter power enrichment.

    If you are open loop tuning without...
  24. Thread: gen 4 vve tuning

    by 5FDP
    Replies
    11
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    153

    Using a wideband is better than fuel trims.

    Using a wideband is better than fuel trims.
  25. Thread: 4l80e segment

    by 5FDP
    Replies
    1
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    68

    No, you still need to segment swap. Post your...

    No, you still need to segment swap.

    Post your file.
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