? for you running the new SCT 1.22 tune - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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Old 07-31-2008, 07:38 AM
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? for you running the new SCT 1.22 tune

from about 40-50 does your tranny jump back and forth from 2500rpm to 3000rpm a few times under about 1/4-1/2 throttle with the race tcm shift points? only put 75 miles on the truck with this new tune, everything else is awsome, just trying to figure out if this is happening to anyone else, has hapened 3 times in the above situation. just got done loading the stock shift points to see if that fixes it. let me know what your trucks are doing.thanks
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Old 07-31-2008, 07:47 AM
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The tranny seems to do the usual learning thing. It shifts all weird, then comes around. The race shift points weren't available for me with the R/D tune, but I'm guessing it will probably be available when SCT releases it on their site shortly.
The only complaint I have is the throttle response on the "other" end. It seems to take a 1/4 second for the program to know that you lifted and to shut the fuel off. Hopefully, they are working to resolve that also..
I don't think I have 20 miles on the tune yet, so I'm learning also.
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Old 07-31-2008, 10:48 AM
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i dont have the "lifting problem" mine seems to work normal in that regard, and i am running lw64tr122 or, and i have the race shift points, havent been able to drive it yet after changing to stock shift points to see if this helps the jerky doesnt know what gear to be in thing that i experienced, any body else have this happen?
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Old 07-31-2008, 12:34 PM
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Mine run perfect with race shift points !! Almost 2 responsive do low.
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Old 07-31-2008, 05:01 PM
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from what some people have mentioned and my monitoring on the livewire I'm agreeing with them saying its a fuel issue in the regards. my build date was 02/08 not sure what job number that is but thats when my truck was built.
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Old 08-01-2008, 06:32 AM
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122 Is on their site.
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