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.
Apexi Pen style turbo timer is the most slimmest and nice looking turbo timer exspecially the new 1 black colour with blue LED.I always want to get 1 but spent my money to the other part of my evo 7 since i have a no...