New tranny tunes on older 6.4.21

geereed · #1 (**permalink**) 05-21-2011, 09:38 AM

I love the shifting on the new tune but prefer to have the quicker throttle with the older Hot Damn 250. I wonder if any one has put the new tranny tunes on the older software like 6.4.21. If i could get the new style shifting with the older 250 Hot Damn it would be perfect in my opinion. I just dont have the you no whats

to try it and see if it works.

hookset · #2 (**permalink**) 05-21-2011, 09:42 AM

subscribed

geereed · #3 (**permalink**) 05-22-2011, 04:28 AM

bump bump bump

GetLifted · #4 (**permalink**) 05-22-2011, 07:15 PM

I would change the tune tonight. I love the new shifting, but running higher temps. The mpg's are down.

H&S tech please let us know If we can use the old 250 tune and new trans tunes.

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