has anyone had any experiance with chip programmer tools like the Superchips   
   1842 Flashpaq Tuner? my ford expedition has over-sized tires on it and the   
   main thing i'm wanting to do is to get the mph and mpg reading properly so i   
   have a better idea of how the vehicle is running... i might adjust a few other   
   things or even drop in one of the premade performance data sets but the main   
   thing is the mph and mpg...   
      
   everywhere i look i see apparently good things about this device but i'm not   
   so sure about the $$$... i've seen it anywhere from $295US to $350US...   
      
   )\/(ark   
      
   ... This is Cal dog and his Worthington Spot on drugs.   
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