I have the full Faultmate diagnostics for the p38 including being able to unlock and clone BECM's.
I have had the kit for 10 years+ and used it quite a bit for one thing and another, though to be honest I have not really made full use of the BECM module.
I unlocked and cloned I think 3 BECM's as spares for my car when I first got it, however, I was put off a bit because getting access to the CPU on the logic board involves soldering fine wires onto microscopic components on the pcb. Soldering is a nightmare for me, as electronics is not my thing, not helped by failing eyesight. Though having said that I have recently bought a magnifying headset and better soldering equipment which helps me a lot.
I built a test jig out of acrylic sheet a while back (the mk1 version) but it was not really a viable method and didn't work properly. Because the weather has been so crap over the last few weeks (months?) I have used the time to build a mk2 version using new spring loaded test pins. I also used a new laser cutter that I recently bought to cut out the jig. After more than a dozen revisions I might add, it now works. It is still work in progress and needs a few improvements but soldering is no longer required. I have unlocked and played around with a further 3 this week.
I can now start to offer a service to forum members who are interested. It will be strictly one at a time and there will be restrictions on the type of BECM I can initially unlock. There are two versions of the logic board. I am set up to do version 2. Later BECM's that start YWC ......... should be ok.
pm me if interested.