Frequently Asked Questions
How do I determine my total speedometer error?
You can determine your speedo error by measurement with simple calculation
or by complex theoretical calculation. The "Calibrating the Yellow Box" (pdf)
instructions detail how to use either method.
How do I adjust the Yellow Box?
By simply setting the switches to correct for your total speedometer error.
Will the Yellow Box work on my bike/car?
The Yellow Box is compatible with almost every bike and car that has an
electrical speedo. Old mechanical bowden cable-driven speedos
(rotary cable) are not compatible with the Yellow Box.
How hard is the installation?
Installation is very easy. Most people do the installation themselves
usually takes about 30-60 minutes. Involves connecting 4 wires to the
vehicle speed sensor. Every Yellow Box includes good instructions.
Does the Yellow Box stay on the bike/car?
Yes. The Yellow Box provides real-time speedo correction and remains
connected to the vehicle.
I changed sprockets on my bike, will the Yellow Box fix it?
Yes, this is a common application.
I changed diff ratios/wheels on my car, will the Yellow Box fix it?
Yes, this is a common application.
I changed my Hayabusa faceplate (dial) from 180mph to 220mph?
This is also a common application. The faceplate change gives a 13%
speedo error and the Yellow Box provides plenty of range to correct
the faceplate error and also for changes in bike gearing (sprockets).
This is ideal for Hayabusas that have been de-restricted for racing.
Will the Yellow Box remove speed limiting on my Kawasaki ZX-12?
Yes. The speed limiting on the ZX-12 is based on the speed sensor.
The Yellow Box provides a corrected speed signal to the speedo and ECM
and this can be used to adjust the speed limiting point up and down
and/or remove the limiting altogether.
It will also remove the problem where the speed limiting point has been
accidentally lowered by changing the bikes gearing.
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