Recent content by carazytrk

I found a possible lead in the wiring diagrams. Good luck with your research. EDIT: I found the SP1 input. This is your signal wire.

Why not get something like OVTune and do it electronically? There are no tuning option for the 2003-2004 GX470

For the Dakota Digital unit, I used OUT2 instead of OUT1. OUT1 is an AC signal and the cluster is looking for a square wave.

It'll fix everything. The speed signal goes through the cluster before going to the ECU and the rest of the computers. This will correct the ODO and MPG readings, it'll also correct the miles to empty estimates.

I installed a Dakota Digital SGI-100BT using the wiring suggested in the above post. This SCM has a Bluetooth interface so I could bury it in the dash. I decided on at 15.5% over correction for my 315/70R17's App settings are attached.

Here is the picture I created earlier today. I found this article by searching "GX470 C11-15" LOL

Thanks for the great write-up. I wish google would have made this easier to find as it would have definitely helped me out. I had to wade through Prado 120 and 4runner posts and Toyota wiring diagrams to find this info.