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Originally Posted by simple
JohnA,
Just trying to get my head around what you were talking about the steam.
1. port injection is good as cylinder get to see water droplets 5-20 micron in size
2. evaporative cooling is good as it cools the air down until saturation point is reached
3. steam what produced in intake system and not absorbed by air is bad as it ?replaces? some of the air in the system?
Basically speaking all excesses water that does not get absorbed due to the system been past saturation point and which boils up is bad?
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two different things:
Port injection is a better version of injecting at the throttle: it provides mainly in-cylinder cooling
Precomp injection provides minimal in-cylinder cooling, but it reduces charge temps a lot and allows the turbo to spin slower for the same boost.
One does not exclude the other - i.e. you could have both. (I do)