Yellow Jacket Speedometer Calibrator

This module has been specifically designed for model year 2000 to 2005 S2000's and allows you to compensate for an erroneously high speedometer/odometer reading.  There are several reasons you would want to do this:


Compensate for installing high-performance (numerically higher) differentials


Correct erroneously high factory speedometer (many S2000 owners report speedometer errors between 2% and 6% higher than actual)

More Details Here



Adjusts speedometer within .25% accuracy

Installation Manual for 2000-2005

Installation Manual for 2006-2007



A printed Operation Manual ships with each order but you must download the specific installation guide for your model year.

Note - This device cannot be used to compensate for erroneously low speedometer readings.  It ONLY adjusts the speedometer to read lower than it does now.  If your speedometer currently reads too low, this product will not adjust it higher.  If your speedometer reads too high, this is the cheapest and easiest solution I know of.