In the last week (give or take) my 02 GTP has been making an odd noise. It almost sounds like a pinging noise, and is most noticible at 1500-2000 rpm. It is only present after the car warms up, and is more easily heard through the drivers side wheel than over the noise of the engine. The engine does not appear to be burning oil, and is performing as it always has. The car has about 80k on it. Does anyone know what could be going on?