wfo9
New member
So what is the point of these devices if they in fact do nothing? Where is the speed corrected if not on the speedo, odo, etc?
The speed healer does correct it for the actual speedometer (not sure about odometer and mpg). The obdII devices like scangauge or ultragauge just display it correctly on their own screen. That is what I use... It has a screen to configure the correction factor.. which is very easy to figure out with a GPS.
I would also mention that there does seem to be some tuner shops that can now tune these ECUs. If so, correcting the tires size should be super easy in the calibration. I'm actually very surprised you can't correct it with TIS It's typically a configurable option on trucks. Toyota is the only brand I have heard of without that option for the dealer to configure....
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