lvkeith wrote:
Are you trying to scale down just one wheel speed? Or are you trying to scale either the front or rear axle wheel speeds? I believe in 05 the speedometer takes the info from the front and rear speed sensors on the transmission, and the ABS uses the speed sensors on each wheel for ABS control.
Yes that is exactly what I'm trying to do. Using the Baja TCM with the scaling factor does not affect the speedometer leading me to believe that the front supplies the signal to the dash. Switching between both TCM's the only value that becomes a discrepancy is the rear speed and only when the Baja TCM is in.
subarutech77 wrote:
lvkeith wrote:
The 05 Baja TCM does indeed have a SH7055 in it. If the rom hasn't been posted, there is a method to read the rom using the AUD ports. I can try to dig some stuff up with the defs and tables and such that dschultz had developed. Depending on what center diff set-up you have installed, the MPT or the VTD, you can use either the FXT or the Baja TCU without much fuss. I had a Baja TCU in a FXT with a VTD center in it awhile back. I still get lost when I stare at the assembly code, and school has me pretty busy, I would think there is a rear wheel speed scaling that could be possible, just have to find it. I have successfully sh-boot mode flashed a TCM, but until recently did not have a vehicle I could test with.
The center diff installed is the MPT, the spare TCM I have is the Baja. Looking at the existing components I'm willing to give it a shot on the MPT as long as I can make the correction. What I have is exactly what you have, Baja TCM in a FXT just no VTD. In all honesty I have never sh-boot mode anything,but so far I've been fairly successful and stuff so I figured why the hell not. If you'd like a test vehicle I'd give it a run after getting a bit more familiar.
