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Thread: 300c 5.7 stalls after flash with mpvi2

  1. #1
    Tuner in Training
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    300c 5.7 stalls after flash with mpvi2

    Hello,
    I have 5.7 hemi wagon. Previously I have predator with 93 oct tune + disabled egr, mds, shift firmness increase. I sold it because of lack of options. I've found that when I unmarried it sometimes motor stalls. But I thought that is because no EGR. Unfortunatelly I don't have predator anymore. I thought that simply disable egr with mpvi2 will help but it still stalls. Engine works smoothly, no vibrations, chokes etc it simply stall on random moments, sometimes RPMs goes down but it restarts and runs further. Does anyone know what to change in vcm suite to recreate mine previous 93 oct tune from predator?

  2. #2
    Tuner in Training
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    Dec 2020
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    Ps. It is possible to change PCM from donor and adapt it with mpvi2?

  3. #3
    Quote Originally Posted by [email protected] View Post
    Hello,
    I have 5.7 hemi wagon. Previously I have predator with 93 oct tune + disabled egr, mds, shift firmness increase. I sold it because of lack of options. I've found that when I unmarried it sometimes motor stalls. But I thought that is because no EGR. Unfortunatelly I don't have predator anymore. I thought that simply disable egr with mpvi2 will help but it still stalls. Engine works smoothly, no vibrations, chokes etc it simply stall on random moments, sometimes RPMs goes down but it restarts and runs further. Does anyone know what to change in vcm suite to recreate mine previous 93 oct tune from predator?
    post the tune and a data log .

  4. #4
    Tuner in Training
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    Dec 2020
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    Which tune? From predator or mpvi? Currently I have just stock tune with simply disabled flags for EGR, MDS and secondary o2 sensors. About datalog which PIDs you're interested? I don't even know wich one should I check because engine shuts off random. Only thing I found is almost always:
    - it shuts off while RPM goes down, while car is stopped or coasting
    - when I try to accelerate from stop for more than >4s
    But those are not constant. When I try to reproduce issue it works fine, when I started thinking it is all ok it stalls ...

  5. #5
    Tune your running now from hp tuners. Not too sure on all the pids but for sure, map, rpm, lt st fueling, timing. Just most guys in the know will want to see your tune and a log to be able to help ya out.

  6. #6
    Tuner in Training
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    So this is my current "tune". It is almost stock, only like I said before, I've disabled few things. I've also need to "disable" TCC cause I have shudder issues. Long story short: I've experience shudder while TCC is on, Converter was repaired without succes, new one still shudder, valve body repair: no success, now waiting for new valve body but still need a car
    Later I will try to gather some logs.

    300c_mod.hpt

  7. #7
    Tuner in Training
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    Dec 2020
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    sorry for delay. I drived my car today since I don't use it till is unneccessary. So here is my Log. For me it seems that there is something odd with timing advance. At 16:59:20 my car stalls again. I see strange hill on timing advance just before car stalls
    08-12-2020.hpl