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Thread: is it really knock ??? spanish oak

  1. #21
    Advanced Tuner f.creek-ranch's Avatar
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    Thanks...I even think so. 20* should be enough without knock, I got an eye on it.

    The pump has arrived today. Its a complete Walbro 255 unit for the Mustang.

    I hope the original Volt table will work for it.

  2. #22
    Advanced Tuner f.creek-ranch's Avatar
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    Logged on the Autobahn.....
    I got a bunch of knock and have to correct the spark down to 16* average at high load with premium fuel.
    I have correct the throttle effective area and activate the lwfm table.
    feels very crispy and responsive.
    but sometimes there is a lean area in fuel up to 1,20 lambda !!! dont know why.

    Here is a log from curvy roads and accelerations


    neusd.hpl

  3. #23
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    I think 16? is probably OK, considering your running high load for long periods... it's just a number after all. If you get it on a dyno you might find it wont make more power with more timing. Those lean spots are pretty bad, can you post your tune?

  4. #24
    Advanced Tuner f.creek-ranch's Avatar
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    effareaknockcorr.hpt

    this is the one...





    in the next step i have corrected map table and go with more transient fuel and transient period - test it tomorrow


    Looks like this.... effareaknockcorr_map_cor_start_ltft.hpt

    even correct a Little cold start and cold transient in this file.

  5. #25
    Advanced Tuner f.creek-ranch's Avatar
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    I take a look at the log and see, every time the Lambda gets high, the o2?s are waiting - cylinder cut off Lambda (combustion stab)


    BTW.....why is the cruise control not working??? is this a Problem by edelbrock?
    Last edited by f.creek-ranch; 11-11-2019 at 02:00 AM.

  6. #26
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    My guess is your torque tables are wrong. When I had my torque tables messed up cruise would surge really badly.

    Just looking at your torque/inverse they do not match what I get. Make sure you have the appropriate values in the calculator since you have scaled the load values, any time you modify the torque table you must recalculate the inverse. I did not find the built in calculator to be accurate so I used the spreadsheet murphy posted. I have found torque/inverse tables to make the most difference in fueling, I could never get transients to do much.

  7. #27
    Advanced Tuner f.creek-ranch's Avatar
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    Ok, I will rescaling the inverse table . do that with a calculator.....

    I activate ltft on closed loop - no Change in fuel.

    Some lean areas are from light tip in in closed loop, I guess the transient table works only in open Loop, like the log Shows.....

    The log shows, the fuel trims are too slow for light tip ins in Close Loop and transient doesnt work on that.

    I ll try to lower the intake volume and raise the fuel pressure, hope it will help a Little bit.

    on warm up there are also issues with lean condition in cl. Activate the O2?s at 650*C and disable the heaters helps to get the engine up to 65*C before cl comes up.

    but the car feels awesome on throttle and very smooth.
    Last edited by f.creek-ranch; 11-17-2019 at 09:55 AM.

  8. #28
    Advanced Tuner f.creek-ranch's Avatar
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    -----will test it soon.

  9. #29
    Advanced Tuner f.creek-ranch's Avatar
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    Test a little bit further...
    under cold conditions the engine is not running smooth, because the OL table is the wrong table for it.
    The OL cold table will only works, if the start up temperature is lifted.
    So Im able to work on cold starts.

    The lean tip in in CL should be a problem by the actuator, maybe the bypass throttle in the charger is opening and closing and the air is alternating....

  10. #30
    Advanced Tuner f.creek-ranch's Avatar
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    Put it to Dyno with external knock control. Now it seems under 20* safe. Depends on Fuel....

    Thanks.
    Last edited by f.creek-ranch; 12-25-2019 at 05:55 PM.