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  1. Thread: First Tune

    by 5FDP
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    3
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    112

    If you want to you can compared this file I made...

    If you want to you can compared this file I made to help with a few minor tweaks that will help out some. The trucks run a pretty rich air fuel ratio, we can lean that out and even more so with E85...
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    130

    A 2005 Express van would be running a P59...

    A 2005 Express van would be running a P59 controller and this computer is a P01, so possible that the wiring between the harness and what you have is incorrect??

    Also this tune file is setup for a...
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    103

    I would like to know why you set the entire low...

    I would like to know why you set the entire low octane timing table to zero degrees. That is a completely wrong thing to do.

    Copy the high octane into the low octane table and then remove like 4...
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    87

    I think your math is a little wrong. :p HP...

    I think your math is a little wrong. :p

    HP Tuner is like $400 isn't it, then it's $100 for the 2 credits you need. The Terminator system is $1,600 for the one with transmission control.

    Granted...
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    79

    HP Tuners can't do anything with the BCM, so...

    HP Tuners can't do anything with the BCM, so you'd be hoping that turning off the VATS on just the PCM does the trick.

    Looks like the 5 cylinder trucks have the VATS control under the systems tab....
  6. Thread: idle trouble

    by 5FDP
    Replies
    3
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    119

    If fuel trims are rich, so he needs to work on...

    If fuel trims are rich, so he needs to work on the MAF/VE more. The VE is completely stock still.

    I'd lessen the over/underspeed spark correction tables a little more. Have a max around -8 and +8....
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    222

    If it's a 5.3 then a few things are wrong. ...

    If it's a 5.3 then a few things are wrong.

    Cylinder volume says it's a 6.0, so fueling will be wrong if you don't change that back.

    Why did you apply the 2 bar speed density OS to this file? Go...
  8. Thread: idle tune

    by 5FDP
    Replies
    5
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    158

    All stock, modded? What the details here? Got...

    All stock, modded?

    What the details here? Got the tune and logs?
  9. Thread: surge camshaft

    by 5FDP
    Replies
    3
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    303

    Yeah, holy camshaft size for a big SUV. I hope...

    Yeah, holy camshaft size for a big SUV. I hope it's got a 3,600rpm stall converter, otherwise it's going to suck to drive around.

    But the surge is because of many factors. Fueling, spark timing,...
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    Get a wideband o2 sensor for tuning, you are...

    Get a wideband o2 sensor for tuning, you are going nowhere fast without one.
  11. Thread: new ecm flash

    by 5FDP
    Replies
    6
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    165

    I'd only use a GM Tool to flash the vehicle with...

    I'd only use a GM Tool to flash the vehicle with a VIN/OS that matches. I would not use HP Tuners for something like this.

    You'd think that O'riellys would have a procedure that the customer must...
  12. Not entirely true, the engine can be tuned in...

    Not entirely true, the engine can be tuned in speed density if the MAF is failed correctly.
  13. Good to hear.

    Good to hear.
  14. These are torque based computers, turning off...

    These are torque based computers, turning off torque mngt is not an option. It must have torque mngt to function correctly.

    Speed limiters are there for a reason. For tire speed rating and the...
  15. What fuel are you running? If it's 87 octane...

    What fuel are you running?

    If it's 87 octane just bite the bullet for 1 tank of fuel and run 91+ octane. If the noise is still there, it's something else.
  16. You only have 1 options for credits, they are...

    You only have 1 options for credits, they are universal credits for the MPVI2.

    A standard "411" computer is a P01 computer from early like F-body cars and GM trucks, an example is 98-02 year...
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    299

    And that type of vehicle would be a what?

    And that type of vehicle would be a what?
  18. Replies
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    167

    Just because you can add timing doesn't mean you...

    Just because you can add timing doesn't mean you should, you'd really want it on a dyno to see where it stops making power.

    You're not really logging a lot of data either. The tune has a knock...
  19. If I owned a MPVI2 I would change them for you...

    If I owned a MPVI2 I would change them for you but I still have the original MPVI with older software that lets me see everything still.
  20. Turn the cat test off in the exhaust part of the...

    Turn the cat test off in the exhaust part of the engine diag tab.

    You left both the post o2 sensor test and cat test on. Those swings in commanded AFR is it doing a test.

    If you can't see those...
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    Your fuel trims are also maxed out. So make sure...

    Your fuel trims are also maxed out. So make sure to check your fuel pressure on this as well. They are very positive at an idle and they spike even higher on the short terms under any throttle.
    ...
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    225

    If I beat on my truck it takes no time to go from...

    If I beat on my truck it takes no time to go from 130-140 degrees and be at 190-200 degrees. I hot lapped my truck at the 1/8th mile track 2 years ago and after 3 passes I was at 195 degrees. Pretty...
  23. Replies
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    165

    If they are GM injectors, finding data should be...

    If they are GM injectors, finding data should be easy. You'd just pull the data from a file that comes with those injectors.

    If they are no name injectors with no real marking on them, good luck...
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    1. Yes it can. 2. This article has a decent...

    1. Yes it can.

    2. This article has a decent breakdown of what the converter is doing.
    ...
  25. Replies
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    151

    With an unknown camshaft it's still a good idea...

    With an unknown camshaft it's still a good idea to raise the base running airflow just a little bit while you work things out.

    Turn off cat over temp (COT).

    Lower the over/underspeed spark...
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