Quote:
Originally Posted by Captain Snooze
If the pump was doing its job why would either of these issues occur?
I'm guessing you didn't read the links. It has nothing to do with increasing flow.
"the EWP may provide up to 10kw of extra power and additional fuel savings."
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Oh I read it.
the electrical system was never designed for it, so now you've got more electrical load on the battery and alternator. The water pump has to be installed and calibrated correctly if you want it to save fuel without overheating your engine. I'd have to see how their rudimentary control system works.
Normally when controlling electric water pumps or throttled mechanical pumps you control to a temperature and/or pressure delta across the engine for maximum benefit. Otherwise you would be left with something like a simple speed and load table which is not going to have the same level of benefit.
It's not just "install this, get 10 horsepower" and you better hope your belt system is going to be reliable after re-routing everything. There's about a gazillion things that can go wrong with such a limited benefit.