Originally Posted by BlackWorksInc

So I have been thinking some... technically all the SpeedoHealer is doing right now is correcting the Vehicle Speed Signal from the Skid Control ECU to the Combination Meter ECU; this leaves a large and critical part of the vehicle subject to the 7% differential in perceived vehicle speed. The ABS/VSC/TRAC systems all rely on accurate wheel speed signals to determine what needs to be done, currently the system is getting a roughly 7% slower reading from each wheel speed sensor thanks to me using 33" tires. This means that the system is reacting based on information that is offset 7% slower; which means the system may not function correctly.

Theoretically wheel speed sensors on our Toyotas are typically simple 2-wire passive magnetic sensors paired with a tone ring that outputs a varying voltage frequency pattern. Which should be similar to the varying frequency output that comes out of the Skid Control ECU, so theoretically you should be able to utilize the SpeedoHealer between the Wheel Speed Sensors much in the same way it is currently utilized between the Skid Control ECU and Combination meter to provide a much more accurate picture of the actual vehicle speed to the entire vehicle. So a simple 4 wire parallel tap into each sensor with the SpeedoHealer outputting it's offset signal should work fine rather than needing 4 stand alone units correct?

Sorry, it's a bit late and I'm not sure if my ramblings making any sense... feel free to punch holes in the theory? Was just thinking that a better way to utilize this is to tap it in before the Skid Control ECU to "fix" the speed issue for multiple modules not just the combination meter (something that would benefit 4th, 5th, ect. gens using this "mod") I just don't have the time right now to change the wiring/mess with things on my daily driver so I figured theory-crafting beforehand might be a better idea.
@1engineer @Jeremy556 @bimrunner (I swear I remember some more guys who'd have some clever input on this... but for the life of me I can't seem to remember the names!)