The heavy duty, Bosch style, 12V, 40A/60A, anti flyback relay is a must in nitrous circuits. The use of this negative spike suppression relay is critical in limiting the arcing of the micro switch to extend the switch life.
Nitrous Express NX Mainline EFI Single Nozzle Kit 10lb Bottle NX-ML2000
Nitrous Express (NX) Nitrous Oxide Jets 60042JP
Nitrous Express NX DRYNOZZLE Single Discharge Dry Nozzle 1/8 NPT
Nitrous Express (NX) Mainline Fuel Solenoid Each
15964 Nitrous Express NX Digi-Set Delay Timer
18959 Nitrous Express NX Tps Wot / Digital Rpm Window Switch