Topic on Talk:Need for Speed: ProStreet
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So I've found a fix for the Logitech G29's force feedback for ProStreet, I don't know if it'll work for everyone but all you have to do is install Logitech's gaming software (and probably restart). You can find it at Logitech's support website and download the latest version.
Putting this here in case anyone has time to add it to the article.