Garage19

How much water (as a percentage ratio to fuel) should you inject on a typical WI set up?

I'm sure I've heard figures in the region of 10% banded about?

Would i need to back the fuelling off a touch to maintain the correct fuelling when on the water, due to the water vapour taking up the place of air in the cylinder? Or is this effect negligable, or maybe cancelled out by the colder/denser charge effect?

DC.

Stavros

Between 10 and 25 percent is usual, depending on application.

Fueling adjustments will be negligable, may be able to lean it off to increase power, but leaving it certainly wont harm power unless you already have a mega effective intercooler.

Stavros

This post is quite interesting with lots of RR graphs and comparisons.

http://www.aquamist.co.uk/phpBB2/vie...bd1aaec08edbec

One thing id really like to see is effectivness with no intercooler at all.
But i have that one in hand, gimme a few weeks.