Programming for gear swap?

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FlatbedHemi

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Apr 10, 2019
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Texas
Ram Year
2015
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6.4
I know a lot of guys have had gear swaps and not had to do any corrections for their speedometer, but what about other programming that effects transmission shifting? Is there anything in the computer that needs to be adjusted for new ratios? Just trying to get everything working properly, and I know what having the wrong tire size did to the shift points.
 

RedSRT4Me

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Scottsdale, Az
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2015 CC Sport
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5.7
I've programmed in my BCM with alfa that my truck is running 4.56 gear.

It's also programmed in my Diablo tune as well.

Not sure if that helps.
 
Joined
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Riverside California
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2018 2wd
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HEMI 5.7 Revolution 4.88s
Yes, you have to do it with either a tuner or with alfaobd ... I used alfaobd to switch it to 4.88s which is what I regeared to and the truck runs fine and the shift points are on point ....
 
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