It seems that you all are very knowledgeable on these sleds. I just purchased an X-Fire 7 Sno Pro and would like any ideas you have on clutching and maximizing power. Has anybody tried pipes and cans? How did they work? I get from Speedwerkz that approximately 10% of the sleds will have bogging problems with new cans, any thoughts? Also, is the oil injection manuel or computer setting.... Thanks