Okay im going to do this step by step

Step one move your Forza game save to your pc with a usb

If you don't know how to do this please message me .

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Step two download xbox 360 tools here

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Step three open xbox 360 tools

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Step four go to file then open usb explorer, then hit open device and your usb should pop up like this

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Step five double click the usb then find the game save, once you have found your game save right click it and select extract then select desktop and hit ok.

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Step six go to game editors and hit E-H and scroll down to forza motor sport 3 /4

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Step seven hit open and select your game save from your desktop, once you have modded everything hit save. Make sure you don't go over 500000000 other wise you may face a ban

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Step eight you might have noticed a Forza profile.backup had saved to your desktop if so just delete it.

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Step nine go back to your Usb explorer and delete the old save then right click and inject file, Choose your game save then close everything.

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Step ten Safely remove your usb put it in your xbox move your save back to your HDD and wallah, Your all done

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Please thank the topic comment or pm me if any problems

Fluid