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Power Strokes
6.4 Aftermarket
4r without pcs??
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[QUOTE="Mark Kovalsky, post: 412431, member: 1654"] Of course it can be done. ANYTHING is possible given enough time and money. This will take more time than you can believe, and it will cost more than a brand new F-550 fully loaded, but it could be done. First you'll need to modify the hardware in the TCU. The solenoid drivers in the 5R TCU controls VFS solenoids. The shift solenoids in a 4R are both on/off, not VFS. The hardware is not compatible. The 5R shift solenoids will not fit, nor work in a 4R. Next you'll need to write a new program to run in the TCU. It will take WAY more than tuning. Tuning just changes the constants in the program to change how firm and when the trans shifts. You'll need a totally different program to make this work. It would take me pages to describe why, you'll just have to trust me on this one. It isn't impossible, but it is so close to impossible that it might as well be impossible. [/QUOTE]
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