I recently installed a summit o/r H. Im almost 100% positive there is a leak between the passenger side connecting the pipe to the header. Is it best to just re-tighten? Or should i put some sort of sealant on there. I don't hear it at idle, but once i give it any type of gas i hear this annoying sound like paper flapping in the wind. My next question is, would this lead to a loss of power? The car doens't seem to have as much pull, and im hoping i can attribute this to the exhaust leak.