Has anybody ever installed a speedometer calibration box?

[Rizzo]

I was thinking of installing one of those Yellow Box calibrators. I had one on my last motorbike and they worked awesome. You could adjust your speedometer so it was perfect and on the motorbike it worked great with gearing changes. Just wondering if anybody's used one on their Viper to get the speedo to read perfect? It would also work great if I decided to change tire / rims sizes. If so how did you wire it in? Here is a link to the one I had on my bike. Official home page of the Yellow Box Speedo Recalibrator


Thanks.

 

[plumcrazy]

I think rttttted might have one on one of his cars.

 

[InjectTheVenom]

Cool little device! Does anyone know if it can also be installed on Euro cars?

 

[Viper X]

Unitrax in Anaheim, CA did the speedo calibration box install on my 01 GTS ACR when I changed the rear gear ratio.

You might give them a call.

Dan

 

[steve911]

Aren't all of the ABS cars self calibrating based upon wheel revolutions not gear ratios?

 

[Darbgnik]

Aren't all of the ABS cars self calibrating based upon wheel revolutions not gear ratios?

Yup, as long as the tires are stock diameter.

 

[Viper X]

Aren't all of the ABS cars self calibrating based upon wheel revolutions not gear ratios?

Nope, the 01 and 02 Gen II's have ABS and the speedos are not self calibrating.

Not sure why this question is on the SRT forum, but it is and it looks like (by the photo) that the originator of this thread (Rizzo) may have a Gen II.

Dan

 

[dave6666]

Unitrax does not have the speedo boxes any more as their supplier went out of business. DC Performance is developing a new one and I'm muling one.

 

[Bandit3]

Call Ringold Dodge. I traded my gen one and there was a brand new Unitrax calibrator iin the trunk. Of course this was a while ago, but it's worth a call. Yellow 95 RT10 Ferrara

 

[Rizzo]

Nope, the 01 and 02 Gen II's have ABS and the speedos are not self calibrating.

Not sure why this question is on the SRT forum, but it is and it looks like (by the photo) that the originator of this thread (Rizzo) may have a Gen II.

Dan

I have a 98 as well as a 2005 but I havent changed my pic yet to show both. The 98 should be sold this weekend so I will have to change the pic soon. I want it for my 05. I got an email back from the Yellow Box company and they are going to send me one to try as they are just developing one for a Viper so hopefully I get it and try it out.

 

[ViperTony]

If it helps, I can scan and post the Unitrax Speedo installation instructions from the unit I'm selling. It does have a schematic with PCM Pin numbers (GenII) however it's specific to the Unitrax unit.

 

[Rizzo]

Thats awesome. Any chance you have the directions for a Gen3?

 

[CWhiteRun]

Dakota Digital has one as well and it was very easy to hook up. I believe it was a four wire affair and one of those was a chassis ground. I put one in an ls1-rx7...took ten minutes to get working when I got the correct wiring.

 

[ViperTony]

Thats awesome. Any chance you have the directions for a Gen3?

Sorry bud, I only have the GenIII version.