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					Originally Posted by edevlin
					
				 
				"Every so often I get a popping sound from the exhaust when I start the car and accelerate. Almost like a hesitation. What I have to do is accelerate hard a couple of time and it goes away." 
Mine does not really pop, but you can hear the exhaust gurggle, not when I accererate, but when I let off the gas. It does sound like unburnt fuel igniting, but just checked my mixture last week and its right on the money.
    
			
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Ed, my '02 S did this too.  I checked the AOS, and it was fine.  It kept getting worse until I ran a bottle of Techron thru...  Amazingly easy fix, car runs like new now.  Gas mileage dramatically improved too.  My car is stock.