I always use Water injection as proction meaing tuning my car at dyno without it and turn it on at track . my system is snow stage 2 with 20/80 ratio using smallest noozel

mid throttle reponse will be affect. but top speed is about the same. been track this setup for almost 2 year with pump gas no issue

first hot lap is .8kg
and 2/3 hot lap is 1.0 kg
GCG high flow turbo with street port and xcess lower intake manifold

 

Very cool vid. I am currently installing an ai and always appreciate feedback from others on how it is working out.