My buddy just bought a 98 600 efi and there is a noticible bog about half throttle. I think that it is the SLP can and pipe that he has on it. My question is: can I take the stock pipe and can off of my 98 zr 500 carbed and try it on his. I looked up the numbers and the pipe for the efi model is 0712-233 and for the 500 is 0712-232. Does anybody know what the difference between these two pipes are?? Thanks in advance.