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Thread: Looking for a stock tune for 2008 300c 5.7L

  1. #1

    Looking for a stock tune for 2008 300c 5.7L

    Helping someone out who had their transmission settings modified but a tuner and now gets "Improper gear ratio" and ends up in limp mode.
    Just want to do a tune compare side by side to see what all was changed on the vehicle to see if it's a tune issue or some sort of vehicle issue.

    Thanks in advance.

  2. #2
    Advanced Tuner
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    Quote Originally Posted by [email protected] View Post
    Helping someone out who had their transmission settings modified but a tuner and now gets "Improper gear ratio" and ends up in limp mode.
    Just want to do a tune compare side by side to see what all was changed on the vehicle to see if it's a tune issue or some sort of vehicle issue.

    Thanks in advance.
    i had the same issue from a tuner. stock gear ratio for 2008 chrysler 300 c 5.7 are as follow,1st gear 3.59 2nd 2.19 3rd 1.41 4th 1.00 5th .83 rev 3.15
    By the prickle of my thumb something wicked this way comes!2008 Chrysler 300c! 2013 heads/220/230 comp cam/LTheaders/FTI 2600 stall converter.

  3. #3
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    do you have the file to look at it?

  4. #4
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    the only file i have is modified, not to sure how modified it is but if ya still want it, its yours.
    By the prickle of my thumb something wicked this way comes!2008 Chrysler 300c! 2013 heads/220/230 comp cam/LTheaders/FTI 2600 stall converter.

  5. #5
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    I know this is an older thread but did you get the "improper gear ratio" fixed? I am having the same issue after doing a swap in my 2006 300c. I took out the 5.7 ecu and I am running the 6.1 ecu that I pulled the engine from.

  6. #6
    that message is p1731. customer put 24's on the car and never updated the tire size in the car. ran for a few months and transmission welded itself internally. magnet inside was covered in material and smoked smell. have reverse and 2nd gear only. any effort to accelerate make transmission temps hit 210 in just 10 seconds.