You do understand that low fuel rack pressure leads to low fill rate of the pumping elements and thus a *LATE* injection timing as opposed to early right? There just aren't a lot of reports complaining of failed rod bearings on these engines. If your claims had any merit whatsoever, the same would apply to any other IDI diesel with a mechanical lift pump setup. A bearing failure is far more likely to be due to tolerance issues or lubrication starvation than injection timing. You're talking a couple of degrees here in timing issues, not several to tens of degrees as some of the tuners run without problems on the stock bottom ends.

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Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)