yellow box dialed in for speedo

[1KoolAsp 14TA]

had problems with my unitrax speedo box, that the speed was jumping all over the place, replaced it with the yellow box speedo , works great, dialed it in with a gps and is on the money, accurate at all speeds. great item for us that have done gears, unitrax does not make that box any more, and wonder really know how accurate it really was.this box is great, wires right in there , simple.

 

[moparracing]

how much & where'd ya get it?

how where you able to adjust it to calibrate it to the proper speed?

3.55 gears?

 

[1KoolAsp 14TA]

i got 355 gears also, paid $99.00 free air freight, order box yb4, switches are set to 00010111, that put it right on.



Official home page of the Yellow Box Speedo Recalibrator

 

[JohnnyViper]

recently bought a unitrax box, I wish I knew about this before

 

[coupe]

There is a chart included in the package telling you what settings to set the dip-switches to for various percentage changes to the speed. Of course, this has to be calculated using your different gear ratio and different tire size...but it does allow VERY precise settings.

I got one through JonB @ PartsRack.