Nitrous Express Direct Port Water Injection 4 Cyl Stage 3 w/HardlinesNX direct port water methanol systems inject the water methanol mixture directly into each intake runner providing excellent distribution to each cylinder. These systems include a high pressure electric pump, stainless steel hard lines, filtered nozzles, nickel plated fittings and a composite reservoir. Stage one systems include a wide open throttle activation switch while stage 2 and stage 3 systems include digital progressive controllers that