I've been tuning for quite a while but now I have a problem I can't seem to solve. If I do an LS swap into a 4x4, I want to keep the VSS in the transfer case. I know there is a pin on the PCM to tell it that the TC is in 4-lo so the tune can scale accordingly but I can't seem to find the table in HPTuners on any 4wd tune that I can find. Does anyone know what I'm missing?

 

I'm not aware of any 4x4 tables. It would be handled by changing the OS and having the sensors wired right. I believe all are vss and no switch.

 

I understand the wiring to the pcm. There is a vss and a switch to tell the computer that it's in 4 low so it can scale the shift tables. I just figured it would be simple to adjust the low range gear ratio but I don't think it is.