I am thrilled to announce that this will not be a dead end thread! It turns out my high pressure sensor was bad. Took 1 minute to replace. From my research this is an uncommon failure, but I was able to troubleshoot it via multimeter as my last few posts stated.

Conference dinner at a great wine house last night…

Hi guys!

Nice to see you starting something new, fresh and promising here. I really like the optimism and i'm happy to help out if needed!

// Turboforslund

I think I've found the issue, my M4.4 ECU is from a NA version. From what I've read it seems like the M4.4 should be from a Turbo version Do you think that matters? It absolutely matters. The NA ECUs don't have the components populated on the board for the TCV control. Just two 0 Ohm 0805 resistor ...

It was gmh 's. Many thanks to him for the very low price, and mountains of parts included. He was going to donate it and emailed me first asking if I wanted it. I'm the 4th owner. Gotta fix: NOx failure at smog check, probably a vacuum leak AC compressor Put on new timing belt ABS throwing the dash ...

The last 64k can be read like M4.3.
32k-64k in first half is possible with higher voltage.
First 0-32k require short circuiting an address line and reading 32k-64k.
So not very practical or safe, but not totally impossible.