"My problem is in the misuse of the words "compatibility" and "interchange". Interchange implies that functionality will be identical. Compatibility means you may slide by. I can't imagine an NA map would provide for all the needs of a turbo, but I'll bet differences would be all but invisible in very basic, light load driving."

If you look for Zach's posts earlier I make comment about this specifically. The difference between NA and Turbo ECU's is not invisible. But yes, in my case, I did put a NA ECU in my Turbo. However, I wish I had known this was "slide by" solution.