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Okay....
Now, what kind of turbo did the factory install on the IDI's? The ATS website kind of infers that Ford tapped them on the shoulder....
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Yes the "factory" turbo on the 7.3 IDI was an ATS unit. ATS at the time was located in Murray UT. They have since changed things, and I'm not sure what the UT company does now. There is an ATS in Colorado, from what I understand they bought most of the patents and such from the UT company.
By the way, for what it's worth here is the breakdown as I've learned it:
83-86 6.9 IDI
87 part 6.9/part 7.3 (also 87 was the only year to get a 5spd behind the 6.9)
88-92 Naturally aspirated (N/A) 7.3 IDI, also introduced the E4OD
93 N/A 7.3 with turbo(ATS) as an option
94 N/A 7.3 IDI, Turbo 7.3 IDI, or PSD (also turbo)
They did build 6.9's in '82, but they were '83 model year trucks.