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			Chris, 
Go to your local auto parts store and have them read and clear codes for you.  If they won't do it, buy a reader (under $40 easy, some now under $20).  Clear codes and see when they come back. 
 
You can remove rear cats and replace with bypass. 
 
Don't remove front cats.  Just replace forward O2 sensor(s) if needed.
		 
		
		
		
		
		
		
		
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