Speedohealer Calibrator V4.0 Universal I

Works exactly as described. The hardest part is figuring out which wire is your VSS signal.Took me a couple hours to install in a Subaru, but it would have been about 20 minutes if I knew which wire to cut.The easy splice connectors they supplied were slightly too large for the wires in my dash so they didn't make good contact. I used some smaller ones from Advance Auto.The only caveat is that you will likely add about 10 miles to your odo just by setting up and testing the system, the top speed recall adds about .1 miles every time, and it will add miles according to the speedometer ratio. (Double the speedometer reading and the odo goes up twice as fast as it should)That said, it's a LOT cheaper than a reckless driving charge because your speedometer was inaccurate.... If you know what I'm getting at. ;)Like I said, it worked great!

Worked PERFECT, installed a S2000 cluster into my 1989 Honda CRX and this device was a critical part in making the speedo work. No more tickets and after nearly 7 years after installing it, it still works 100%.

I am using it in my 93 Civic LSI, european market, with D15b2 engine, i took out the old cluster and installed the 2004 Honda s2000 ap2 cluster, its digital. The speedo is working and it displays the real speed i am driving. The calibration process is very easy, it let me choose KPH or MPH. just read the instructions.

The Speedohealer is really easy to install and calibrate to fit your bike exactly. All you need to know is what speed your bike is showing, and your actual speed (it may be difficult to actually figure this out, but I used a GPS). To get an accurate reading, you should go at least 55 MPH for proper calibration.

Couldn't get it to work right.

2003 Wrangler Rubicon. You will need to splice into the factory wiring harness at the transfer case, but it works perfectly and is easy enough to program. My speedometer is now calibrated to match GPS speed.http://www.jeepforum.com/forum/f140/electronic-speedo-correction-867289/

Pretty simple to install and very easy to program, works great

It worked for my daihatsu yrv speedometer signal that came from automatic transmission ECU.my speedometer is accurate,and the app helps calculate the difference required. Highly recommended.