68rfe Adaptive Learning

[davalt75]

I just bought a 2021 Ram Laramie 2500 with the 6.7 Cummins SO and 68rfe transmission. This is my first Ram truck after moving over from a Ford. I've read about the adaptive learning on the 68rfe trannys and that they take a while to learn how to shift based on the owner's driving. I love the truck so far but it definitely shifts different from what I was used to in the Ford. I feel a slight bumping, almost like it's trying to figure out what gear to be in, mainly in the lower gears. I've only had the truck a week and it has just 350 miles on it. I'm wondering how long should expect the learning curve to take before it settles down.

 

[mtnrider]

At 350 miles it's pretty much going to be what it is, they also do a quick learn at the factory. All the talk of learning is really geared towards those that tune which erases the CVI values so it has to start over.

The Cummins is a much different truck then the ford and they drive very differently so try not to compare the 2.

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[davalt75]

At 350 miles it's pretty much going to be what it is, they also do a quick learn at the factory. All the talk of learning is really geared towards those that tune which erases the CVI values so it has to start over.

The Cummins is a much different truck then the ford and they drive very differently so try not to compare the 2.

I don't mean to compare it to my Ford, that's just really all I have to compare it to. It doesn't shift hard or anything like that. Just different from what I've been used to. I love the truck, though. Have no regrets at all.

 

[JayLeonard]

My 2021 shifts very smoothly. Also seems very consistent as far as rpm and shift points. Currently at 5500 miles

 

[davalt75]

My 2021 shifts very smoothly. Also seems very consistent as far as rpm and shift points. Currently at 5500 miles

Mine doesn't shift hard or anything. I think (hope) it may just be that I've driven Fords for the last 8 years and I'm just getting used to the way the Ram shifts. It doesn't shift bad or anything. Just different. I don't see anything in the rpm's that would indicate it's searching for the right gear, but sometimes there's a little bump like the timing of the shift is off a little bit or something. I have noticed that it seems like it's in a hurry to get into overdrive. So much so that it seems like it's lugging a little at low speed sometimes. Again, it may be that I am learning how the transmission behaves.

 

[Riccochet]

Mine doesn't shift hard or anything. I think (hope) it may just be that I've driven Fords for the last 8 years and I'm just getting used to the way the Ram shifts. It doesn't shift bad or anything. Just different. I don't see anything in the rpm's that would indicate it's searching for the right gear, but sometimes there's a little bump like the timing of the shift is off a little bit or something. I have noticed that it seems like it's in a hurry to get into overdrive. So much so that it seems like it's lugging a little at low speed sometimes. Again, it may be that I am learning how the transmission behaves.

That sounds right. Shift strategies have moved towards "get to the highest gear possible as quickly as possible".

Have you tried turning on tow/haul? It'll hold gear a little longer. You can also drive it like you stole it for a little bit. Trans will start holding gear a little longer on it's own. Everything is so computer controlled. Even the learns your driving habits and controls the throttle body. If your puttin around all nice and slow and easy it'll remove some responsiveness to the throttle body, making acceleration a lot slower and smoother. Start rippin on it a bit and the throttle response comes back.

 

[davalt75]

That sounds right. Shift strategies have moved towards "get to the highest gear possible as quickly as possible".

Have you tried turning on tow/haul? It'll hold gear a little longer. You can also drive it like you stole it for a little bit. Trans will start holding gear a little longer on it's own. Everything is so computer controlled. Even the learns your driving habits and controls the throttle body. If your puttin around all nice and slow and easy it'll remove some responsiveness to the throttle body, making acceleration a lot slower and smoother. Start rippin on it a bit and the throttle response comes back.

I do tend to be easy on the pedal but I want it to be able to go if I need it to. Guess I need to goose her every now and then. The transmission does seem to have settled down and shifting smoother in the last week. I know it is probably entirely coincidental but it seems to do better since I put the leveling kit and 35s on it yesterday. I don't know what one could possibly have to do with the other. May be all in my head, too.