Results 1 to 5 of 5

Thread: Toyota Tundra 5.7L

  1. #1
    Potential Tuner
    Join Date
    Sep 2018
    Posts
    4

    Toyota Tundra 5.7L

    So my car is equiped with LTH and CAI, trying to get the most out of it. I have did a couple of WOTs, the AFR was like 13-13.5.

    I have enriched the PE table, now I got the AFR at 11.5, not too sure if this is considered rich for my applications.

    To optimise the tune, I have done some data logging. I was able to obtain a histogram of RPM vs Engine load. Do I need to update the high octane spark tables with what I got in the histogram? Thanks in advance.

    EQ 5 out of 100 added p2441 p2443 p0430 p420 removed EQ 1.344.hpt
    Attached Files Attached Files
    Last edited by korbiams; 3 Weeks Ago at 02:35 PM.

  2. #2
    Potential Tuner
    Join Date
    Sep 2018
    Posts
    4
    I have attached my tune file and datalog...maybe someone can skim through them and share with me his thoughts.
    Attached Files Attached Files

  3. #3
    Potential Tuner
    Join Date
    Apr 2019
    Posts
    1
    I apologize, I do not know much English and I use Google translator.
    You can make datalog on one transfer from 1500 to 5500 rpm.
    Throttle position 50% gear 3 or 4.
    Throttle 100 position: gear 3 or 4.

  4. #4
    Potential Tuner
    Join Date
    Sep 2018
    Posts
    4
    So I managed to meet a member of this forum in person, who has helped me and has spent many hours trying to figure out how to optimise the tune and ensure that the tune is knock free. We are unsure how maf calibration is possible on Tundras without the Maf Voltage PID. I have opened a ticket with HP tuners support for almost a week now. So far no response.
    I am attaching my tune file as well as datalog. Could someone have a look and let me know whether I am running safe before a catastrophic failure happens . Thanks in advance.
    Attached Files Attached Files
    Last edited by korbiams; 3 Weeks Ago at 03:48 PM.

  5. #5
    Tuner
    Join Date
    Apr 2007
    Location
    Los Lunas, Avondale
    Posts
    67
    11.5 AFR is rich but depends what your wanting out of it. Here's a little general info to go by.

    11.5 AFR - Best Rich Torque at Wide Open Throttle (WOT)
    12.2 AFR - Safe Best Power at Wide Open Throttle (WOT)
    13.3 AFR - Lean Best Torque
    14.6 AFR - Stoichimometirc Air/Fuel Ratio Value (Stoich)
    15.5 AFR - Lean Cruise
    16.5 AFR - Usual Best Economy