Speedo correction - Marks vs Truspeed vs YellowBox

[rohitash]

Hi all,

Wondering about the pros and cons of the 3 speed correcting devices above. I need to get one so if you have any experience with any of these, or any suggestions for another unit do let me know. From what I can figure out - all 3 work in pretty much the same way and all 3 could be installed the way described in this excellent post:
https://forum.ih8mud.com/100-series-cruisers/211990-installed-superlift-speed-sensor-calibrator.html

Marks and TruSpeed seem to have two independent settings and are similarly priced whereas the YellowBox has only one setting but is around half the price.

 

[hankinid]

I'm thinkin' the only reason you'd need 2 settings might be switching to and from snow tires in the winter...??

Absent that, I'm thinking about the YellowBox, moving up to 285-75's skewed the speedometer about 8% on the low side...it's possible there was some low side error before the tire size swap too.

Currently using gps pretty much all the time, so a correction box is not at the top of the list...yet.

Steve

 

[pman]

Hi all,

Wondering about the pros and cons of the 3 speed correcting devices above. I need to get one so if you have any experience with any of these, or any suggestions for another unit do let me know. From what I can figure out - all 3 work in pretty much the same way and all 3 could be installed the way described in this excellent post:
https://forum.ih8mud.com/100-series-cruisers/211990-installed-superlift-speed-sensor-calibrator.html

Marks and TruSpeed seem to have two independent settings and are similarly priced whereas the YellowBox has only one setting but is around half the price.

The only thing that I can think of as an advantage for the the Marks, is that its been built primarily for use in Landcruisers......not that it actually matters. Slee seems to like it, if that counts for anything.

Having two settings might be helpful if you want to switch back and forth from an oversized mud tire to stock sized road tire.......this way your shift points and odometer will always be correct.

Pros & corn of 3 speed correcting devices are Satellite access is everywhere today being used in high frequency.U can use it on talk on phone whether at home on road.Another technique much aware now-a-days is voice over internet protocol is an evolving technology that allows voice communications to travel primarily over the Internet via a high-speed connection rather than the traditional telephone network.I guess sir it will definetely helpful to you.

That has nothing to do with this thread........

 

[Trunk Monkey]

Soon to be gone spammer.

 

[rohitash]

Thanks Guys. Found another useful thread which Ihad somehow missed earlier.
https://forum.ih8mud.com/80-series-tech/191047-speedo-correction.html
I leaning towards the Yellow Box as I don't have any need for two tire sizes. Both my onroad and offroad tires are the same size - 35". That way I have only one spare and I don't need to swap it when I change my tires.

Has anyone had any problems with the Yellow Box or any known downside other than lack of two settings? How is their service?

 

[Skidoo]

There is also the SpeedoHealer, marketed to motorcycle market, that could be used.
HealTech Electronics Ltd. - Makers of the SpeedoHealer, GIpro, X-TRE, OBD Tool
In same $100 price range as YB and has a couple more features.

 

[Skidoo]

Taking this a step further, based searching internet looks like a number of vehicles can have their computer reprogrammed for different tire sizes via OBD port, anyone know if our Cruisers support that.