This unit corrects the speed signal after it was altered by something else, such as sprocket changes, tires size changes, or transmission changes.
This unit does require some basic wiring to install. It's fairly easy, and only 4 wires; [positive, ground, signal-in, signal-out].
Note: This unit cannot alter your existing odometer readout.
Small 20mm x 20mm (0.8") square design. Saves max speed, which can be recalled to your stock speedometer gauge Wide calibration range(percentage and multiplier/divider adjustment capability) Built in testing mode to ensure proper installation Easy Setup Simple plug-in installation for many vehicles Ratio based correction in 0.1% steps, up to 99.9% + or - Fractional frequency multiplier & divider with 0.1 steps, up to 99.9 + or - Weather proof design to protect against the elements 18" wiring harness (1.5ft) 3 year product replacement warranty Made in the USA