I have compared a/c control digrams for F and B.
In B-body the a/c clutch engagement is controlled by pcm with pressure cycling switch signal. And F-body has another, a bit more complicated scheme. F-body PCM uses a/c refrigerant pressure signal input and evap. temp sensor for a/c clutch contol.
So if I use F-body tune, the pcm will never engage a/c as it has no evap. temp sensor. I suppose it is programmed in a part of code that is not covered by .xdf.
Now I`m going to make a tune of B-body firmware with tables for F-body (almost all of them). Correct me if I`m wrong.
By the way, what is your opinion, is it really worth doing such a tune, or I`m just wasting time?
A/C compressor control diagrams for F and B-bodies. I think gonna be useful for someone doing such kind of swap.
Attachment 10975 Attachment 10976
Bookmarks