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  1. 6.4L Performance Parts Discussion
    I’m sorry if this has been answered already, I don’t know how to navigate this site well yet. I have a 2008 f350 with with sct gtx. It already has custom tunes from diesel performance of Texas. The transmission tunes are awful. Running a 200hp tunes and I’m now on my 4th transmission this year...
  2. 6.4L Performance Parts Discussion
    I am wondering how the other custom tunes shift compared to spartan and Gearhead. I used to have spartan now I run gear head hot street. I am not bashing anyone I am just looking for more knowledge and comparison. I like my gear head tunes I just want to know how others compare. Thanks
  3. 6.4L Performance Parts Discussion
    I have to replace my motor and i plan on putting either the mini max or dash daq in the truck when i get it back. Right now i have the spartan 275 loaded straight into the pcm and cant change it. Josh at rcd said he has never heard of that but thats besides the point. I am just trying to get...
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