Images are cut off when users post pictures

[BoostedK20]

If a user hosts a picture from another website (photobucket, imageshack, etc) and posts the picture correctly, it gets cut off by the post border. I edited the stylevar named postbit_content_max_image_width to 2000px, but it didn't do a thing. How can I fix this?

Link to page: http://www.boostedk20.com/forums/showthread.php/8-Si-Speed-317-s-400whp-Daily-Driver

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I've tried everything I can find, nothing yet. ugh.

[BoostedK20]

Still acting up.. My goal is to get the post itself to get wider, i've seen it on many forums. I don't want a scroll bar either