What is the amount of error (after the speedo gear is installed) of these two gear ratios? I heard that a computer is needed to be 100% accurate with the 3.73. Anything above uses the same 23 tooth gear, so I imagine the higher you go the more error you will have. I am leaning towards 3.55 right for this reason, I dont want any error in the speedo/odo. Thanks for any input.