Edelbrock 71900 Progressive Nitrous Controller<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Controls amount of nitrous flow to solenoid</li><li>Calculates duty cycle and power ramps</li><li>Comes with an LED display</li><li>Features a digital display</li><li>Touch switch programming</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51yK7aaVgBL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31XLTpcVFRL.jpg" noproxy>