What about the NOS Noszles kit that replaces the injectors? and sprays fuel and N20 in at the plenum? Kinda a hybrid wet system. seems promising and more foolproof than either wet or dry kits.
And to the guy spraying a 125 shot. You are f*cking crazy for real dood. Spray on brother.
Just don't leave the Nitrous line dragging under the car like Brian Earl Spilner the serial killer...