Fuelab Black 25-90 PSI Electronic Fuel Pressure Regulator comes with a 25-90 PSI and 6AN inlet gasoline and 6AN outlet gasoline. This product is compatible for diesel, methanol, ethanol and it works with all Fuelab prodigy pumps. It is an independent system and no calibration required, it automatically reduces the current draw at low flow demand fittings, wiring harness included.