H and s mini max transmission relearn??

[08 King Ranch 6.4]

I am wondering what transmission setting to use I am still not sure which tune to download I am really not doing this for the power just to make my truck last longer but it would be nice to be able to feel the power every once in a while any advice would be appreciated

[travisH3]

I run shift schedule 1 in the medium or low option. This locks the torque converter in 4th and 5th gear like stock. If you do a lot of heavy towing pick medium. If you just do a lot of highway driving pick schedule 1 low. The medium or low is when the tranny shifts. Low is it shifts at lower rpms which I like and help improve mileage. Medium is nice because it doesn't lug the engine as much and you have power when you need it for towing. For the tune, I would just select the hot damn tunes and if you don't want all the power or risk just run it on the no power setting on the tune on the fly. If your feeling the need for speed, click it up to mild, wild or hot with a push of a button and you have more power.

[08 King Ranch 6.4]

Ok thanks for info. What about the relearn cycle 0-80 1/4 throttle to full throttle. Is doing this necessary? Do you have to do it every time you change your tune from no power to mild wild or hot?

[superduty6.4]

I don't do the relearn any more. It just learns on its own after some driving. If you are going to do the relearn it only has to be done when you switch tunes. Adjusting power levels you don't have to do it.

[travisH3]

Originally Posted by 08 King Ranch 6.4

Ok thanks for info. What about the relearn cycle 0-80 1/4 throttle to full throttle. Is doing this necessary? Do you have to do it every time you change your tune from no power to mild wild or hot?

I try to do it but you dont have to. it will learn on its own but takes longer to smooth out. I never switch from the HD300 tunes so I only had to deal with it when i returned it to stock a few weeks ago. and like he said you dont have to do it every time, just switching from mild to hot just changes power, tranny is still the same.

[strokinpower]

I have never once done a "relearn." As stated above these transmission learn as you drive them. Also I don't see how anyone can stand the shift one tunes. I run shift 2 med and its the closest to stock I think.

[Lifted Fords]

You need to do a relearn when ever you go from stock to HD300. When you load the tune it wipes out what your Trans has learned. So if you go from stock to hot on HD300 your Trans won't know how to handle the power. If you get on it You will hurt your Trans. If you don't do a relearn it take a long time for your Trans to learn. And if you forget and hammer down on it, not good for the Trans.
I didn't do a relearn on my one 6.0 and forgot, let's just 7k later I learn my lesson.

Your Trans is always learning and a relearn helps it learn you just doubled you power output.
For the OP if you have it in HD300 you do not have to do a relearn when you go from hd300-stock to hd300- mild to hd300- wild to hd300-hot. You only have to relearn when you go from bone stock to tuned.


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[strokinpower]

There is no need to do a trans relearn however if it makes you feel better then go for it.

[08 King Ranch 6.4]

Thanks guys. I want this to be a good thing so I don't have to spend money on repairs just trying to do everything right.

[Alaskan_awd]

Originally Posted by Lifted Fords

You need to do a relearn when ever you go from stock to HD300. When you load the tune it wipes out what your Trans has learned. So if you go from stock to hot on HD300 your Trans won't know how to handle the power. If you get on it You will hurt your Trans. If you don't do a relearn it take a long time for your Trans to learn. And if you forget and hammer down on it, not good for the Trans.
I didn't do a relearn on my one 6.0 and forgot, let's just 7k later I learn my lesson.

Your Trans is always learning and a relearn helps it learn you just doubled you power output.
For the OP if you have it in HD300 you do not have to do a relearn when you go from hd300-stock to hd300- mild to hd300- wild to hd300-hot. You only have to relearn when you go from bone stock to tuned.


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It shouldn't hurt the tranny on a 6.4 without doing the re-learn. My guess is it works just like a fuel map, H&S loads a base map, then the truck uses the base map and writes another map on top of it as it "learns", making small adjustments to the base map.