Hi all, I'm new here.I've heard about this great forum. Just bought XR 650 L 2006 from friend from some auction.I couldn't see or try that bike before,so he found and bought this one. First I noticed 2 holes on left [outside] engine cylinder.Wierd.Then I found few more missing parts on left side.Engine works great btw.It has WhiteBros 2 exhaust. Then my friend came with exact same bike and we found out that there is on left side on engine missing all the air parts. Then,we found that there was dome some modifications on the carburettor too. So probably jetted and modet it.It is much powerful then friends stock bike. But I'm woried.Is it safe for engine? I will do 50/50 driving.