What plans do you have FI? Coz I can't understand it from the links you posted. I read only that Dave didn't get any decrease in egts.

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1992 Mercedes 190D 2.5 turbo 5sp manual. EGT+boost gauges. Boost controller set to ~14.5 psi. 1 1/4 turns on full load adjustment. LPG injection. Next in the list is water injection.

Port injection.

What's the advantage? Better atomization with smaller injectors? Also, wouldn't the water have more time to evaporate if injected right after the turbo rather than at the intake manifold?

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1992 Mercedes 190D 2.5 turbo 5sp manual. EGT+boost gauges. Boost controller set to ~14.5 psi. 1 1/4 turns on full load adjustment. LPG injection. Next in the list is water injection.

Yes. Better atomization and even distribution.

It would, but like water sprayed on a hot plate it will still evaporate very quickly.

FI have you decided what injector size to use? Buying 5 injectors and finding out they're not the size you want is not a good thing.

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1992 Mercedes 190D 2.5 turbo 5sp manual. EGT+boost gauges. Boost controller set to ~14.5 psi. 1 1/4 turns on full load adjustment. LPG injection. Next in the list is water injection.

Its going to be quite a while before I do it so I haven't settled on the exact sizes yet. I want 500-600cc/min total volume at 110psi in two stages, one for cruise and one for power.

First stage will be a single ~100cc/min injector at the manifold inlet that will be on when the throttle linkage above idle (with an oil pressure safety switch to prevent flooding). I'll use an accumulator inline to reduce pump cycling. The first stage is to help keep the engine clean of carbon and get a touch MPG boost.

Second stage will be five ~85cc/min port injectors triggered at ~10psi.