Ok i have a 2007 600HO i took the vents out of the hood and took off the foam ring around the air box. I am getting told by the dealer service tech that if i run my sled without the foam ring it will cause it to burn down. Seems to me it will do better if it can get more air and breathe. I ride at 8000-10000 feet not much air up here... any truth to this?????