Speedometer/ODO/Trans/ABS calibration W Portals on 200 Series

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

Joined
Sep 4, 2006
Threads
4
Messages
16
I hijacked another thread unintentionally so starting a new definitive thread on this subject.

As 74 Weld Portals start getting put on our 200's it seems the Very Large TIre Situation (VLTS) combined with the way the LC200 handles wheel speed sensors, speedometer, odomoter, ABS, and Trans shift points creates a problem that so far I've not seen a solution to.

I just got portals and 37 inch tires (mild compared to some others) and based on other trucks I've lifted/regeared, I assumed that the regear from the portals would offset the tire size and the speedo/trans/abs/odo would essentially be close enough to stock that it would be manageable. It looks like the LC200 uses wheel speed sensors only for these which means only the tire size and speed affect these functions. The net effect is without some form of calibration the truck is going 10-15MPH faster than it thinks it is at highway speeds and creates several non ideal issues.

I know you guys know WAY more about the LC200 platform than I do. I think this is going to be a more and more common issue as more people put portals on these trucks.

I really don't want a solution that requires cutting the factory wiring harness. Hoping there is some graceful solution that I missed scouring the forums.

Spoke to a mechanic and friend at toyota corporate, and he came back with nothing.

Ideas? Suggestions?

9DACA293-FA96-4935-81A7-7337E96D50E9_1_105_c.webp
07A6D60A-F5B8-49EC-BB94-5E082ABF4E77_1_105_c.webp
 
Last edited:
Some dude in the other thread showed screenshots of using HP Tuners to correct the speedo. I was not aware HPT worked with this platform. If that’s the case you can take it to basically any tuner that uses it to have them correct it.
 
Some dude in the other thread showed screenshots of using HP Tuners to correct the speedo. I was not aware HPT worked with this platform. If that’s the case you can take it to basically any tuner that uses it to have them correct it.
I think that was shown ineffective as HPTuners can only modify the engine and transmission controllers, whereas our speed is reported by the ABS/VSC computer.
 
I shot Brian an email too. Looks like he is only a few hours north of me. We'll see if we can work something out sooner than later.
 
I got excited last time I saw his name pop up but he’s near Atascadero. Hopefully some central coast LC person is close by.
 
Back
Top Bottom