Page 2 of 2 FirstFirst 12
Results 16 to 21 of 21

Thread: Greetings from Puckerbrush KS (PCM OS 9373372)

  1. #16
    Fuel Injected!
    Join Date
    Nov 2019
    Location
    Bossier City, Louisiana
    Age
    63
    Posts
    338
    You will need to set your rear tire height and the differential gear ratio if you are running an electronic speedometer. Also don't forget to disable your EGR system, your Sensor 2 oxygen sensors (after the cats), Air Injection system (if equipped) and Fuel Level Sensor.

    I keep a very long list of things to kill off in the tune but its a list I got from somewhere else. I have merely added things to it and let me know if you need it.

    Rick
    1970 Chevy El Camino, LM7 Engine, 4L60E - Two 896 and two 0411 PCM's

  2. #17
    Electronic Ignition! 30bird's Avatar
    Join Date
    Apr 2021
    Location
    Puckerbrush KS
    Posts
    15
    Quote Originally Posted by B52Bombardier1 View Post
    You will need to set your rear tire height and the differential gear ratio if you are running an electronic speedometer. Also don't forget to disable your EGR system, your Sensor 2 oxygen sensors (after the cats), Air Injection system (if equipped) and Fuel Level Sensor.

    I keep a very long list of things to kill off in the tune but its a list I got from somewhere else. I have merely added things to it and let me know if you need it.

    Rick
    B52Bombardier1
    Thanks for responding
    Can you dm me a copy of your list?
    My LM7 is in a 1999 silverado LS ext cab I got it running, driving, tagged, and insured right now, figured I would bang it around until I get the T/A's engine compartment/sub frame ready and body work finished.
    I wanted to disable the evap canister solenoid sensor to test my flash abilities before the swap. I have heard you can disconnect the body control module while the truck is running to defeat the VATS.
    I want to get comfortable with editing since I have another T/A that I will most likely swap a 5.3 and a M6 into.... after my checking account recovers LOL.
    I also have a guy in my car club that is LS swapping a 1972 camaro he has the drive train out of his truck already he is going to do my exhaust if I help him with the ECM on his.
    Bill

  3. #18
    Fuel Injected!
    Join Date
    Nov 2019
    Location
    Bossier City, Louisiana
    Age
    63
    Posts
    338
    Hello,

    The site won't let me send you my DTC list. PM me your regular email address and I will send it.

    Rick
    1970 Chevy El Camino, LM7 Engine, 4L60E - Two 896 and two 0411 PCM's

  4. #19
    Electronic Ignition! 30bird's Avatar
    Join Date
    Apr 2021
    Location
    Puckerbrush KS
    Posts
    15
    Well I flashed to 12212156 and have everything "working" now.
    I am just trying to learn to tune for power and efficiency.
    The tune was throwing lean 1-2 bank codes. The injectors from 1999 LM7 are different size than 2002. Phoenix helped me with a fuel table from one of his tunes on a 1999. I am getting way slower 1/4 mile on torque and worse gas mileage with the 12212156 tune in the pickup

  5. #20
    Carb and Points!
    Join Date
    Jun 2017
    Age
    38
    Posts
    1
    I'm in the same boat, 1999 Silverado with 09373372 PCM trying to switch over to 0411 12212156 PCM. All stock except for a cheap eBay CAI (make sure all the clamps are tight!).

    Was getting battery light and lean codes.

    Now... I don't know why it took me so long to find out about this but UniversalPatcher has PCMHammer built-in and can export a generated XDF (even for 09373372!). It's not the prettiest but allows you to look, compare and change things in TunerPro for the 09373372.

    Here is my changelog (values copied from 09373372 to 12212156)
    Code:
    Edit Log for 12212156-fresh.bin created by TunerPro.
    **************************************************************************
    # Optional
    09/22/2022 11:37:21  Flag:      B1301 - EGR System Enable changed from Not Set to Set..
    
    # Injectors
    09/22/2022 11:37:48  Table:     B3701 - Injector Pulse Width Voltage Adjustment changed.
    09/22/2022 11:38:12  Table:     B4001 - Injector Flow Rate changed.
    09/22/2022 11:38:28  Table:     B4003 - Injector Minimum Pulse Width changed.
    09/22/2022 11:38:42  Table:     B4004 - Injector Default Minimum Pulse Width changed.
    
    # Battery/Alternator Charging
    09/22/2022 11:42:09  Table:     G1207 - Vehicle Platform Options table changed. (Disable F-terminal)
    09/22/2022 11:42:27  Scalar:    Charging System Control option changed from 0  (0x00) to 1  (0x01).
    
    # Speedo correction
    09/22/2022 11:44:38  Scalar:    H0103 - Differential ratio changed from 3.727 : 1 (0x3BA2) to 3.417 : 1 (0x36AC).
    09/22/2022 11:45:02  Scalar:    H0101 - Vehicle Speed Sensor Pulses per Mile changed from 101007 Pulses/Mile (0x6502) to 94308 Pulses/Mile (0x5E4F).
    
    # Disabled VATS and VIN changes not showing
    I haven't had a chance to drive it much since the changes but it fixed my battery light and charging issue.

    I'll attach the generated XDF file for my stock 09373372. If you generate a XDF from the 12212156 bin you can use the diff tool in TunerPro against your 09373372 bin. You can also download EFI Live and compare the two bins, sometimes you have to change the units to match TunerPro, etc, etc.
    Attached Files Attached Files

  6. #21
    Carb and Points!
    Join Date
    Oct 2022
    Age
    41
    Posts
    4
    can i just use this generated xdf or am i better off starting with different os/

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •