Speedometer correction module, which one?

[bronchole]

So my speedometer is off on my Mounty. It has the tranfer case mounted VSS with the gear on the tip. The problem is that in order to correct the speedometer/odometer I need a 22 tooth gear for it. They don't make a 22 tooth gear. They make a 21 tooth and a 23 tooth.

So I am considering looking in to a re-calibraction module that will go in line with the output for the VSS to correct my readings. What units are available?

 

[bronchole]

I found some information on this one:
http://www.superlift.com/accessories/truspeed.asp

They list an application for the 95-97 Mountaineer. Looks like they go for $230-$300 OUCH!!!

 

[bronchole]

This one from Dakota Digital looks like it may work and looks like it sells for around $85:

http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=126/category_id=287/home_id=59/mode=prod/prd126.htm

 

[bronchole]

Jet performance also has a unit for $160 or more:

http://jetchip.com/shop/shopdisplayproducts.asp?Search=Yes&sppp=10

Not very much info on this on their site though. Not even a copy of the installation manual.

 

[bronchole]

K-tune adjustable speed converter $165:

http://k-tuned.3dcartstores.com/Adjustable-Speed-Converter_p_10.html

 

[kindred4x]

K-tune adjustable speed converter $165:

http://k-tuned.3dcartstores.com/Adjustable-Speed-Converter_p_10.html

I tried the jet product on my 96. That was the worst waste of money ever. Unit was difficult to calibrate if I remember correctly, then it failed after a month and just about left me stranded on the side of the road

 

[bronchole]

Thanks for the input/review.

I am leaning towards the Dakota Digital unit primarilly because of the price tag.