Anyone run the white brothers XCR pipe for their CRF250X. I was told its a good slip on muffler for the X? Supposed to give it a good all around hit, Not just top end like some of the others. Or is it a waste of time without the header? I don't want to take away all my bottom end hit. I'm looking for a good top to bottom addition to my bike. Let me know what ya guys think.