Recent content by madmanvillain

  1. M

    P0171 system too lean after PCM of NC tune

    I've got mixed feelings. I am incredibly let down on the customer service I recieved. Wouldn't answer the phone or return messages for almost 2 weeks, couldn't work through any troubleshooting with me, and then they gave up on me saying it was an oddity and they had no idea what to do. So far...
  2. M

    P0171 system too lean after PCM of NC tune

    Threw my truck on a better reader. Stft looks decent. What was way off was my air fuel ratio. It was pegged at 14.6 and didn't change no matter the rpm or load or anything. Changed MAP sensor and on my short trip it seemed better but I'll know for sure with more time.
  3. M

    P0171 system too lean after PCM of NC tune

    Starts at 0.9 and drops to 0.8 and holds. I will check short term fuel trim in the morning when I won't get the cops called on me for revving in my driveway at 3am.
  4. M

    P0171 system too lean after PCM of NC tune

    I am getting 0.8 volts at WOT.
  5. M

    P0171 system too lean after PCM of NC tune

    I feel like it runs a little rough at lower RPMs than higher as well.
  6. M

    P0171 system too lean after PCM of NC tune

    I have verified per the book my vacuum is good at idle. I'll verify my O2 voltage at WOT tonight. Intake is a pieced together one I made, gutted oem air box spectre filter and 3" abs to the throttle body, no resonator. All the lines reattached as well. I will also check the intake this weekend...
  7. M

    P0171 system too lean after PCM of NC tune

    I have an 04 trailblazer with the 4.2. So I tuned my truck with a new PCM from PCM of NC. Since I have had a P0171 code system too lean bank 1. In my tune I had them delete the cat, plus all the usual stuff. My troubleshooting has included checking for a vacuum leak, fuel pump pressure, I...
  8. M

    Torque-fuel quantity

    Has anyone found out how to get fuel quantity to work on the Torque app? I have an 04 Trailblazer.

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