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| 6.4L Performance Parts Discussion What has or has not worked for you? |
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Need Help Fast.
just downloaded the new update from h&s. also tried to load the new 300hp load. it says all loaded however when i check minimax after it loaded it still says 6.4.20 and not 24. what m i doing wrong?
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Once you put the files on the sd card go to truck and update firmware and it will restart. Then you need to install the download again so it programs the pcm and tranny again. Should take 6 minutes.
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If you put the trans tune on you will have to update firmware for that too.
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