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Discussion Starter · #1 ·
My truck is stock and I pull a 10k+ trailer and want to add an EFI tune for a little extra power. Is the Transgo Jr all I really need to beef up my tranny to make it last with the extra HP from the tune or do I need to actually completely built the tranny? If I need a complete build I might not go for the high HP tunes.

From what I gather the transgo is really just for smoother shifts but I could be totally wrong.
 

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