Programmer?

Is there a programmer for the 4Runner like the Jeeps have the Tazer mini? To help with gear hunting and speedo adjustments for tire size? I've tried looking but all I see are horrible reviews.

 

I'm not sure. Per the road side speed indicator board thing my speedo seems to match (I'm running 285/70R17).

I don't run heavy tires so I don't feel gear hunting on my 4Runner.

 

Carista maybe ?

 

285’s put the speedometer right on target, I discovered this also when I was running them. Stock size tires (265) will cause the speedo to display 1 mph faster than actual speed.

I asked my service manager at the dealership about calibrating the speedometer and he stated that Toyota doesn’t provide a way to change it, even for them.