Hi! I have been researching for days and think I may be headed in the right direction but want get other opinions. I'm working with a 1989 Camaro with a twin turbo SBC 24x conversion, 4l80e trans, and flex fuel. I have a custom harness for my original plan of running a 0411 P01 PCM. When it come time for an operating system I couldn't find a P01 OS that included the 2 bar enhancement with RTT and FLEX FUEL. I happen to have a P59 PCM from a wrecked 2006 truck so I looked there and found that a 2003 Express offered 2 bar RTT, flex fuel and 4l80.
I know my harness does not plug into the P59 without changing the Blue or Red plastic pieces but otherwise are the 2 PCMs pinned the same? I guess I just need a little guidance from someone who has swapped from P01 to P59. Also, will I be able to flash the older OS from 2003 into a 2006 PCM? I'm unsure what OS is in it now but I do know its DBW and my car has a cable.
Any advise will be greatly appreciated, without it I may end up wasting credits trying to use a system that's not gonna work.
Thanks,
Dewayne.