The mechanical pump, larger injectors and bigger turbo will probably be needed.
I have the following:
-3" Straight Pipe Exhaust
-Speedtuning Stage 2 Chip
-Speedtuning EGR delete

The car is definitely faster with the mods I made. I've considered a different turbo. But it suits me just find right now.

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Ed
-1984 Mercedes 190D 2.2 5-speed gray market(bought@30,000 miles) (Sold back to original owner@170,000 miles)
-1999 Mercedes E300DT (245,000 miles)
-1999 Mercedes S500 Grand Edition (80,000 miles)