Edelbrock is known for innovative products, and our new Nitrous Systems are no exception… All Edelbrock Nitrous Systems are dyno-tested and calibrated to deliver accurate and safe horsepower gains. Edelbrock nitrous calibrations are determined through engine dyno testing. Edelbrock Nitrous Systems are available now for up to 250+ HP gains in carbureted engines. Check out these advanced features: • Larger Bottle Valve Included with Performer and Performer RPM Systems • Detailed Instructions • Precision-Machined Stainless Steel Solenoids • Stronger Micro-Switch and Solenoid Brackets • CNC-Machined Stainless Steel Jets • Heavy-Gauge Steel Bottle Brackets • Heavy-Gauge Siphon Tube • Pre-Terminated Wiring Harness • Braided Steel Teflon Feed Lines • High-Quality, Powder-Coated Aluminum Nitrous Plate