Add a laptop, and yep, that's all you need to data log, which will tell you how everything is running. 
 
Then you can decide what to do based on that.  The $750 is for an AP and a couple hours of tuning by a professional.  This custom ECU tuning is called a Protune by Cobb and is a fairly new addition to the AP's list of features.
		 
		
		
		
		
		
		
			
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				Slow and low, that is the tempo.
			 
		
		
		
		
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