I am still very new to the programming world of PCM's. I have successfully converted a 99 Tahoe from the "Black Box"
to an 0411 PCM. This got my feet a little wet. Now I am wanting to put a L21 454 with a 4L80 into my 1965 Impala. The L21 uses a
24X Crank Reluctor and a 1X Cam signal which allows for CNP. From what I understand this engine used a "special" PCM.
Since I do not have the PCM I was thinking I could go ahead and upgrade to a P1 or P59. Is anyone familiar with this upgrade?
Any suggestions on what file to start with? I have played around with different base files such as starting with an 8.1 and
segment swapping the transmission along with swapping around the bank for cylinder so I can repin the harness for the correct firing order.
I am sure there is a lot more that I will need to do but I was just curious if anyone else has done this? I am open to suggestions on which PCM,
OS, and which base file to start with. Any guidance is greatly appreciated.