adjust speedo with SCT Livewire?
Lead Driver
Joined: Jun 2007
Posts: 6,757
Likes: 5
From: Corvallis, OR
Programmers cannot adjust the speedo, they only correct for shift points. You need about 640 revs/mile (from Toyo AT datasheet for that size). If you want to correct the speedo you can have a dealership reprogram the ABS module for that size tire, they can adjust for up to 35" tires. Another option is to install something like the Superlift TruSpeed which modifies the signal from the ABS module to the PCM to show the correct speed. FYI, I checked with my local dealership and to reprogram the ABS module it was around $45 here. I plan to get mine done since I changed gears and run 35s, I want it to be correct when I don't have the tuner on it.
Thread
Thread Starter
Forum
Replies
Last Post
