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Thread: TuningSchool Dodge transmission book

  1. #1
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    TuningSchool Dodge transmission book

    Anybody know what the holdup is on this book?

    It's been coming soon for months now.
    If in doubt, multiply everything by 1.1.

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    Quote Originally Posted by spoolboy View Post
    Anybody know what the holdup is on this book?

    It's been coming soon for months now.
    It took over a year for the tuning school to come out with the 5.7/6.4 engine tuning course so it probably will take a while.

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    The question is will the info be very useful when it comes out. The 8 speed tuning is pretty complex and many I see take a similar approach that's really not the best.

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    Quote Originally Posted by tbrtuning View Post
    The question is will the info be very useful when it comes out. The 8 speed tuning is pretty complex and many I see take a similar approach that's really not the best.
    Well if the info is anything like the engine controller tuning course I'll pass.

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    There is hardly any real info on these transmissions aside of adjusting shift points.

    Having played a little, I wound up mostly returning my tune back to stock. It seems that there is still a hug lack of understanding of how everything works together and how the trans adaptives come into play.

    I will say this for sure - if you play around with pressures/times and then flash it back to stock - you MUST reset the adapatives and SHOULD do at least a fast learn before driving around.
    If in doubt, multiply everything by 1.1.

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    Advanced Tuner Jim P's Avatar
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    Quote Originally Posted by spoolboy View Post
    There is hardly any real info on these transmissions aside of adjusting shift points.

    Having played a little, I wound up mostly returning my tune back to stock. It seems that there is still a hug lack of understanding of how everything works together and how the trans adaptives come into play.

    I will say this for sure - if you play around with pressures/times and then flash it back to stock - you MUST reset the adapatives and SHOULD do at least a fast learn before driving around.
    Depends on the transmission, NAG1 Chrysler has a drive pattern they recommend be followed after ANY time the TCM is reflashed in addition to the mandatory quick learn procedure if I remember correctly. While the 68RFE Chrysler only mentions recommending a quick learn any time the TCM is reflashed. The 68RFE TCM, the adaptives gets reset every time it is reflashed.

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    I guess I was mostly talking about the ZF8 trans as I believe there is some limited info for the Nag1 that is held pretty close to the vest.

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    Advanced Tuner Jim P's Avatar
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    Most stuff with these modern day transmissions is kept pretty tight to those who have the information

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    I would be surprised if much detail was released on ZF8. I have gone through thousands of revisions on different cars experimenting with ZF8 and so many things work together that it takes a ton of time to gain an understanding of it. You can make those things shift crazy fast and hold up to a lot of power when done right though. The HP70 can hold up to constant abuse even at high power also if tuned right so don't let people trick you into thinking they are weak.

    I think you see so much more damaged because the OEM tune on them is not really good for boost so more burn up the clutches in them. Hellcat or Trackhawk tunes are close enough they can survive a lot more on near stock trans tunes. I think it's the 4-5 clutch they burn up first on mostly stock tune with just raised pressure but it takes them a while to fail it seems like. Just depends how many pulls at those speeds the person does and at what power level.

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    Having seen some things, it looks like some of the "tuners" just dial the adaptive goals up so high that the adaptives simply max out on the ZF8.

    Not sure if that is a good idea or not.
    If in doubt, multiply everything by 1.1.

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    They aren't really helping much. I usually reduce the torque values for adaptive to nearly nothing and then just dial in all the shift timing and torque management for each gear. Allowing a lot of adaptive control just seems to lead to inconsistent shifts for me. Like you mentioned, I have seen that many people do seem to allow a lot of adaptive control though