HHO Dual Mode MAP / MAF Sensor Enhancer
This Map Sensor Enhancer  has separate "Hwy" & "City" adjustments along withan "On" & "Off" (Original Factory Setting) switch.This device was designed to work with an HHO generator (Hydrogen Fuel Cell).Even if you have good mechanical skills, you should have the repair manual for your vehicle to help find the Map sensor and locate the wire that goes from the Map sensor to the computer.Improper installation of this Map Sensor Enhancer may cause problems with your vehicle's electrical system.Consult with a qualified mechanic before installing this device.