last night i was heading out to the beach with one of my friends, and we caught a light. he said everytime i was shifting my bike would shoot a flame out of the exhaust. so on our way back, i was looking at the exhaust while i shifted, and sure enough i was shooting flames. it would do it if i was shifting at 7k or at 15k, and i didnt even have to be accelerating fast for it to happen. anyone have any idea why my bike is doing this? its an 05 r6 with a filter and 2 bros slip on.