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Thread: Changing engine displacement on the tune

  1. #1
    Tuner in Training
    Join Date
    Oct 2019
    Posts
    10

    Changing engine displacement on the tune

    i did the swap from a 5.7 hemi to a 6.4 hemi.
    i got a new 6.4 pcm thats programed to my VIN

    now the ESP/TC is off. my tuner said changing the Displacement on the tune to 5.7 will fix it.

    my question is will this affect anything with the tune itself ? or this is just identification stuff.

    thanks,

  2. #2
    Quote Originally Posted by WELLWELL View Post
    i did the swap from a 5.7 hemi to a 6.4 hemi.
    i got a new 6.4 pcm thats programed to my VIN

    now the ESP/TC is off. my tuner said changing the Displacement on the tune to 5.7 will fix it.

    my question is will this affect anything with the tune itself ? or this is just identification stuff.

    thanks,
    He is correct.


    That table is there to make the out computers in the car happy. It has to match the original config or you will get implausibility codes. Setting it to 5.7 won't effect performance.

  3. #3
    Tuner in Training
    Join Date
    Oct 2019
    Posts
    10

    Thanks!

    Quote Originally Posted by Kmoney View Post
    He is correct.


    That table is there to make the out computers in the car happy. It has to match the original config or you will get implausibility codes. Setting it to 5.7 won't effect performance.
    Thanks!