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.
recently decided to remove my JSpeed manifold heat shield due to its rattling on idle. Its spot weld has came off. Suddenly notice a hair line crack measuring approx 3 inch long. During idle it doesnt...