no electronics to it.
Basically a single jet before the distrubution block, then divided into 4 single jets at each nozzle.
From the zex144.pdf install manual Kit #82030
Dual-stage jet technology gives serarat tune-ups for both speed-density and mass-air equipped vechilces. Other kits on the market ignore the differences in the two engine operating systms.
Unique nozzle design has "Active Fuel Control" built in. This feature monitors the bottle pressue and when the nitrous systen is engaged, it adds or subracts enrichment fuel so the engine never runs too rich or too lean.
Sounds like bullshit to me