[VetteVet]

Jonathan,

The LS1b PCM is the 411 PCM. I have looked at pinouts for all 411 applications that I can find and none of them have a pin for 8192 UART out, only Class II serial data.

If you are aware of an application for the 411 PCM that shows it is capable of 8192 UART communication, please let me know.

Why else would GM (or Holden) go through the trouble and expense of developing and installing a PIM if the 411 has the hardware onboard?

Based on my research, I am leaning away from any LS PCMs other than the 411. It is a much more capable PCM (and tuning support is WAY better) than the ones used from 1997-2000.

If you'd like, we can take this discussion over to CF to consolidate the info.

I appreciate your efforts.

Jep