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 bought a wrong O2 sensor for my microtech ecu and apexi O2 monitor. Before that i use a unknown 1 wire O2 sensor from chop shop but it melt due to unknown reason. After that i change another O2 sensor...