Improve your vehicles fuel economy up to 50% Are environmentally conscious Reduce harmful pollutants and emissions Greatly enhance your engine's power and performance Remove carbon deposits and prevents future carbon build up Reduce the operating temperature of your engine Reduce demand for oil New MAP Sensor Enhancer with Dual Potentiometers for your hydrogen powered vehicle. These are a must have if you are using an HHO Generator Setup. This is the Ultimate HHO add on, allowing you to have full control over your fuel intake. The gas mileage benefits are not seen without this device, on 1996 or newer vehicles. Separate CITY and HWY controls allows the operator the ability to set the MAP Sensor Enhancer for optimal performance. Once you have it set there is no further tuning necessary as with single knob enhancer's. Quality parts and components used. Each unit is tested prior to shipping. This unit will allow you to gain Full Control of your Map Sensor allowing you to lean out your air to fuel mixture to Improve Your Gas Mileage. All wires are clearly labeled for easy installation.This latest version has two potentiometers so one can be set to city conditions while the other optimized for the highway. This was built using exact Water4Gas specifications from their official ebook. Installation should take less then 15 minutes and instructions will be provided upon purchase. Wire colors may vary from vehicle to vehicle. This device is experimental and we cannot assume any responsibility for improper installation or miss use.Will not work on cars with a pulsed frequency MAP/MAF signal or wide band O2 sensor... Please check with your mechanic to make sure this will work for you in your particular vehicle. This item is being sold with a 30-day Warranty. We certify that this unit is free of any defects and will perform correctly. If you have a problem with this unit within the 30-day warranty period then send it back for repair or replacement,shipping is Non-Refundable. Tampering or incorrect installation will void the warranty. Call Our Tech Department for More Information on All Our Products. 859-605-6177