i just cleaned my air filter on my ds and put it back together and noticed a vacum leak noise coming from somewhere. after looking into the problem my intake boot has a split half way around it! i dont know how long its been like this either! not good eh! so i dont know what the motor sucked in! i just got back from the badlands when i noticed it. so im going to change my oil. hopefully no motor damage was done! anybody have any ideas where to get one? its the boot that goes from the carb to the intake.

 

I got mine from the dealer. It looked like dryrotted to me. I caught it in time though.