Ah, fair enough. Yeah, if you want to do proper wide-grip pullups you'll need a new pull-up bar. They have plenty that go wider - I have one myself. http://www.amazon.com/Astone-Fitness-Complete-Chin-Attachment/dp/B003WY2P40/ref=sr_1_14?ie=UTF8&qid=1420651002&sr=8-14&keywords=pull-up+bar
That being said, regular pull-ups are fine for most people. You can add weight if you want to make them harder.