Unlike the automotive world where the 100,000-mile mark is the tipping point for diminishing returns on resale value, a modern streetbike crests the “high mileage” peak at 10,000 miles. Not that there’s much merit to the stigma; a properly maintained sportbike will run a long time, but for whatever reason we avoid the 10K mark like the plague.
With an eye to resale value, one would think that ensuring an accurate odometer would be important. But it’s interesting to note just how many enthusiasts rack up erroneous miles from an inaccurate OEM speedometer or after changing the stock gearing.
Some might find it hard to believe a factory speedo could be optimistic, but few have ever verified their speeds against a radar gun or GPS to understand that most stock speedos (Mythbusters , SSB July ’11) read high. Let’s not even mention that once a bike is geared down for more aggressive acceleration, the rate of error is even worse. This means that your bike could be racking up more miles than it’s actually traveling and therefore degrading its value far too quickly.
Take for example this 2008 Yamaha R1 that was fitted with a 520-chain conversion and a +2 rear sprocket. The owner complained of an overly optimistic speedometer, but never once considered the speedo error was a result of the gearing change.
The solution? A HealTech SpeedoHealer. This wonder box is the quick fix to an inaccurate speedometer and even comes as a plug-and-play setup. By modifying the signal from the stock speed sensors the SpeedoHealer is able to tweak the speedometer back into the realm of exactness. The HealTech unit can adjust the speedometer signal down to the smallest percentage in either positive or negative increments all with the push of a few buttons. There’s also a remote recall button to reset the top-speed function since the box keeps tabs on your all-time bests.
The install process took less than 20 minutes and the SSB SuperFlow dyno was used to verify speedometer inaccuracy, although a GPS unit and a lonely road are just as accurate. On the dyno the geared R1 indicated 67 MPH on the cluster against an actual speed of 60 MPH. That’s over 10-percent high, which means for every 1000 miles the R1 traveled it was racking up another 100 unnecessary miles on the odometer. If erroneous miles aren’t bad enough, never being able to pinpoint exact speed is stressful at best.
The SpeedoHealer is an ingenious device that helps solve a problem most bikes have, speedometer error. If you don’t believe us, verify your speed against a calibrated GPS unit, you might be surprised. And if your speedo is as inaccurate as the bikes SSB tested, HealTech has the quick fix.
[01 ] The small box is the...
[01 ] The small box is the HealTech SpeedoHealer and it can be programmed to fix just about any speedometer error. The cable on the left is the plug-and-play cable for our 2008 Yamaha R1 testbike (cables are also available for over 800 different models. Universal units cover the rest). The cable on the right is for the remote top-speed recall button since the unit also logs your fastest passes.
 The speed sensor is located...
 The speed sensor is located under the tank of our R1 and a roll of paper towels easily doubles as a tank stand. Hey, call us cheap, so what.
[03 04] A previously installed...
[03 04] A previously installed Bazzaz fueling computer was already utilizing the speed sensor plugs, but the SpeedoHealer simply plugs inline and both units can coexist.
 Run the cable to the...
 Run the cable to the area under the rear seat and plug it into the SpeedoHealer. Follow the included instructions to calculate the speedometer error before inputting the figures into the unit for correction. Don’t worry, it’s simple math and the instructions answer any questions along the way.
 For those wanting to...
 For those wanting to clear their all-time top speeds, this remote button plugs into the unit and can be routed to a top-secret spot.
Next Month: Crash protection for a Kawasaki ZX-6R.