Over the past several months, my Corsair has been developing a rattle. I've been trying to narrow it down, but it is an elusive bugger. It's a quick, higher-pitched rattle, more like something tapping quickly on something hollow and metal. The metal sound strikes me as one the exhaust system might make. It only occurs in high revs, when the clutch is disengaged(?) (i.e. when the engine is connected to the wheels), and, most strangely of all, only once the car has warmed up substantially. I got under the car and had a quick inspection of the exhaust piping, however, there were no obvious loose bits or connections. I have extractors, and the whole exhaust system, from extractors to tip, is only about 1.5 years old.
So.... has anyone experienced a similar occurance? Does anyone have any advice as to what I might look for, to narrow my search down?