Nitrous Express 15003 Stand Alone Fuel Enrichment System Gas Internal Pump 5-12 psi. Adjustable Regulator Stand Alone Fuel Enrichment System One gallon, high strength, composite fuel cell that can be mounted in most factory battery trays without modification. Pump will support will support up to 600 nitrous horsepower on gasoline or race fuel, 300 nitrous horsepower on Methanol Fuel pressure can be adjusted from 5 to 12 PSI Tank dimensions are 9Lx6Wx8H Trusted Industry Leader