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Type: Posts; User: 4wheelinls1

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  1. Replies
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    Also Interested

    Also Interested
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    This is a different car with the same mods, and...

    This is a different car with the same mods, and tune, it is less pronounced but will stall on hot start if left for 2-4 minutes on the first attempt but will start the second attempt. I'd bee keen...
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    92476 The spark has well and truly recovered...

    92476

    The spark has well and truly recovered at good rpm prior to the stalling,
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    Not variable cam or duel intake runner is my...

    Not variable cam or duel intake runner is my guess. NN is for changing VE.
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    92476 The spark has well and truly recovered...

    92476

    The spark has well and truly recovered at good rpm prior to the stalling,
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    I was able to stabilize it up nicely with changes...

    I was able to stabilize it up nicely with changes to Predicted throttle by reducing the idle torque error to 0 in neutral hot idle, that and Optimal cam posn.
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    It starts and runs for 2 seconds, you can see...

    It starts and runs for 2 seconds, you can see timing adding, +15-20 degrees, I did try adding 5 degrees with no change. There isn't a lot of emissions retard on a hot start.
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    Like NA with a massive throttle to justify the...

    Like NA with a massive throttle to justify the airflow.
  9. Waiting on an 02 sensor, not a common thing Down...

    Waiting on an 02 sensor, not a common thing Down Under
  10. Sorted FT issue, needed to remove Airflow...

    Sorted FT issue, needed to remove Airflow Correlation. Previously tuned elsewhere with a failed 02 sensor as well, didn't realize until stopped with power runs and tried to start VVE triming looked...
  11. LT4 C7 Corvette no MAF mode no STFT and throttle limit

    New to Gen 5, when I fail the MAF I loose LTFT and STFT and the throttle is limited, what else needs to be altered beyond the MAF frequency fail points.
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    Glad we are seeing the same thing from that...

    Glad we are seeing the same thing from that respect. Whats the logic behind an air leak relative to hot start only?
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    Added more but made no difference, I notice the...

    Added more but made no difference, I notice the throttle source is 16 when it stalls on hot start but switches to 9 when you touch the throttle and it runs.
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    Tune attached, I have added idle air but will try...

    Tune attached, I have added idle air but will try more. The vehicle is PD supercharged, the file is my own build for a Harrop 2650 based on the stock OS. The car has good readability and power, hot...
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    18 5.0L Hot start stall

    I have an issue with a hot start stall in an 18 car. It has a PD supercharger, if you breathe on the throttle it continues to run, I've tried all sorts but to no avail. I see the odd random Mustang...
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    I have the same issue on 2 customer cars, can fix...

    I have the same issue on 2 customer cars, can fix the optimum stability cam position but the car has a tendency to stall but is smooth. I also have a crankshaft variation code in one car that...
  17. The TCC apply ramp does not stop the pressure...

    The TCC apply ramp does not stop the pressure dropping until slip occurs, so far so good on the minimum adaptive though.
  18. Probably should have thought of it before,...

    Probably should have thought of it before, reducing the adaptive minimum to zero has helped considerably.
  19. No injector pulse hot start 2 ecus E67

    Hi,

    Does anyone know if the E67 has a thermal cut, since a new engine with a bigger capacity and considerably longer exhaust duration the car won't start hot(no injector pulse). This only occurs...
  20. I have the same issue, I would rather lock the...

    I have the same issue, I would rather lock the TCC as the economy, wear and temperature benefits are there but no end of playing with Regulator and apply ramps have been able to rectify it. If I aim...
  21. Do you think this would help with 6l80 and 6l90,...

    Do you think this would help with 6l80 and 6l90, I have experienced shudder in them, generally when commanding 0 or low slip at moderate loads, slight inclines, towing. the TCC pressure seems to...
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    Has this trans been modified? I have had similar...

    Has this trans been modified? I have had similar issues with a PATC kit fitted (3-5 clutch and shaft) I found I could fix it if I drove around slow then but if I booted it then drove around slow...
  23. It can happen outside PE, that was one of my...

    It can happen outside PE, that was one of my issues. My thought on use is that at low rpm where reversion is high and load/throttle opening is high it uses high temp reversion gases to flash the...
  24. Thanks, this resolved it.

    Thanks, this resolved it.
  25. Miss or lean hiccup when accelerating from low rpm at WOT

    892318923289233

    I have an issue with a PD supercharged LS3 and a persistent lean that occurs at high load from low rpm, typically 1500 rpm or lower, I can replicate it on the dyno or on road, the...
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