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Type: Posts; User: Matt Vardaman

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    I have noticed this on all the P01 2500 trucks...

    I have noticed this on all the P01 2500 trucks I've looked at. Shifted over one position from the typical 1500 truck. It came that way from gm on a stock file.
  2. Your tune file has DFCO shut off. The enable temp...

    Your tune file has DFCO shut off. The enable temp is at 280. Go to fuel tab then cutoff/dfco change the enable temp for deceleration fuel cutoff to 104 which is what it should be factory. They must...
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    You're welcome. Glad to help.

    You're welcome. Glad to help.
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    None of those files in post #5 say .hpt, we can't...

    None of those files in post #5 say .hpt, we can't trust outside links. It's very easy to add an attachment to a post like this:139228
    I have removed burst knock without any issue. Mine is...
  5. Thanks, just wanted to make sure. Since those...

    Thanks, just wanted to make sure. Since those tables have the brick the pcm warning in the description.
  6. 2003 SS Silverado Flex segment questions

    I recently swapped the flex segments into a 2003 SS Silverado.

    The two files
    139156

    139157

    After swapping the segments(engine/engine diag), I have been transferring all the tune data over...
  7. Thank you Kevin. My son bought a 2003 SS and...

    Thank you Kevin. My son bought a 2003 SS and wants to convert to flex. I used this file to segment swap. Thanks for making my life easier.
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    Here is your tune with egr on. it'll work now. ...

    Here is your tune with egr on. it'll work now.

    139132
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    https://ls1tech.com/forums/pcm-diagnostics-tuning/...

    https://ls1tech.com/forums/pcm-diagnostics-tuning/1734778-gen-iii-flex-fuel-write-up.html

    I used this writeup a few years ago, Google is your friend!
  10. The stock injectors will not be adequate at all....

    The stock injectors will not be adequate at all. They will not provide anywhere near enough fuel for a big cammed engine in a drift car. My son just bought a stock 2003 SS Silverado with the stock...
  11. What I usually do is unplug one coil pack at a...

    What I usually do is unplug one coil pack at a time to figure out which cylinder is misfiring. I had a bad br7ef spark plug new out of the box. It was half ass firing. I am running the 2bar os, and...
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    Before I learned to tune I paid for a tune that...

    Before I learned to tune I paid for a tune that zeroed the torque management. My trans stopped pulling timing. It went from shifting decent to shifting slow and felt strange. In my experience the...
  13. I replied on the Gen 3 post, and gave you a file...

    I replied on the Gen 3 post, and gave you a file to use as compare file.
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    You MUST leave the Spark retard tables under...

    You MUST leave the Spark retard tables under Torque Management>Spark retard vs. torque reduction and Spark retard vs. torque loss at STOCK if you want the trans to pull timing on the shift. IF you...
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    Either way it will work fine. I have run it both...

    Either way it will work fine. I have run it both ways. Just make sure the injector offset, flow rate, and short pulse adder are correct. It's more critical to make sure it matches your fuel system...
  16. That's definitely the one he missed. Hopefully...

    That's definitely the one he missed. Hopefully he's not out there baking that airflow into his tune file, lol.
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    The parameter in the histogram needs to be eq...

    The parameter in the histogram needs to be eq error user math.

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    When i made the swap, I just added commanded eq...

    When i made the swap, I just added commanded eq ratio and removed command afr. I have the AEM x series wideband so the math had to change. Here's what mine looks like:
    AEM Xseries

    Lambda Sensor...
  19. After looking at it closer, there is no change at...

    After looking at it closer, there is no change at 13-15v. So it shouldn't change at all at normal operating voltage of 13.5-14.5. I still appreciate the attention to detail.
  20. I will try out the updated data and let you know...

    I will try out the updated data and let you know the results. I have been running the injectors for two years now. Just recently (2 months ago) went turbo on the daily driver. GT45 for now, will...
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    In my experience Fuel pumps that are AC Delco,...

    In my experience Fuel pumps that are AC Delco, Delphi, or any name brand are better than the cheap ones but are not the quality they used to be. I've had brand new ones fail a month after install....
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    The tune file you posted is drive by cable. It's...

    The tune file you posted is drive by cable. It's a 2002 tahoe flex fuel os with speed density enhanced code modifier applied. You go to the system tab, system options, then gmt800. if it has a 1 in...
  23. If you log commanded afr, does it still show up...

    If you log commanded afr, does it still show up as corresponding with the alcohol content? I'm running the same setup on my na setup currently and am in process of building my turbo kit. Even though...
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    It works on the newest vcm scanner.

    It works on the newest vcm scanner.
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    The flex fuel advance clearly works on my PO1,...

    The flex fuel advance clearly works on my PO1, but I haven't found a way to log it other than the comparison between base advance and spark advance SAE. You can log it easily with a P59, because the...
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