Did I just hear someone say Echo Nitrous Kits? We carry the best stock of Echo Nitrous Kits. To get the most bang for your buck, invest in a Nitrous Kit. Get great gas mileage and have fun with upgraded Echo Nitrous Kits. A Nitrous Kit can double your horsepower depending on the size of your engine. Make your vehicle much faster with a new Nitrous Kit. Nitrous Kits are the easiest way to add power to your vehicle.