Not bad. All works. But if you leave your car on slope ground, all mixture from tank flows free thrue nozzle in your intake manifold, intercooler. One morning i come to start engine, looking in tank and that was empty. Check for leaks.. No leaks.. All water in intake system. Reccomend to add in the kit pressure in-line valve. To prevent free flow from tank in manifold, when car standing.. And when system is off and i run engine on boost, i can see boubles in water meth tank.. Boost going thrue nozzle in your tank.