water injection (or water / methanol as it is sometimes referred as)
has advantages to building more power. It cools and eliminates or reduces knock (detonation)
which allows for higher PSI boost on the engine safely. Of course there are a few more details to it that this simplistic version but it has been around since WW II so it is not new technology by any means!
water cools down the cylinder temperatures. It also helps
clean away carbo deposits which can cause hot spots leading to engine
use the AQUAMIST
system with a DDS3
in cab controller/gauge. This is in my opinion the very best water injection system out there. A little more spendy but it
does so much more than lesser units.
uses a 100psi pump and the system is under 100psi the entire time
(pre-pressurized system) so there is absolutely no delay in delivering
the fluid to the injector nozzles.
currently use (1) 1mm jet that delivers approximately 310 cc which
translates to about 10% fuel ratio using (6) 550 cc fuel injectors.
It is set to inject when boost is above 15.5psi.
double advantage in this system is my HKS fan controller includes
a sprayer function that will sub-control the same system but re-route
it (if not under boost) to 3 sprayer nozzles. 1 for the radiator
and 1 for each side mount intercooler. This helps resolve intercooler
heat-soak if doing a lot of high boost runs.
I run a mixture of 70/30. 70% water with 30% methanol. The methanol prevents freezing. Some run 50/50 as a maximum but I find 70/30 works much better. More than 50% alcohol or methanol and the system is degraded from doing what it is designed to do.
\Contrary to what some people think the methanol has nothing to do with the anti-detonation function of the system. All it does is prevent the water from freezing. the WATER is what is cooling and prevention knock. Period. It might be "cool" to say "METH INJECTION" but that is a totally inaccurate term and, in my opinion, usually used by people that haven't a clue of what they are talking about. The proper is water injection. Not as glamorous but that is the proper term.