water injection for turbo usually use the pressurize air (boost) from turbo to "push" water from sealed water container (with controlled vent) to inlet pipe after air filter or turbo.
appropriate nozzle to make small mist of water droplets required to make sure it "blend" with intake air.
water injection benefit from colder air intake temperature and thus some power increment can be felt.
i duno how many MM spacer should put to my car to make my voltex evo garang,please give me some comment,n how to make it wont hurt my bearing when i make my car tyres wide with spacer,thx