Car Exhaust Pipe Electronic Valve Kit Universal 51 63 76MM Button Controller Kit Controller Switch. The Exhaust valve control module is a complete plug-n-play controller designed for that allows you to remotely open and close the vacuum operated exhaust valve. The solution is simple: create a , built product with variable exhaust sound and performance. Including necessary hardware for fitment, and there is no cutting, soldering, welding, or fixing required. Easy to install: Exquisite workmanship, stylish design, no drilling or welding required. After installation, it will enhance the layering of your vehicle and be full of elegant style. Appearance upgrade: The outer layer of the exhaust pipe is made of durable material, the inner layer is mirror polished, and it uses high-end paint technology, which is high-end and tasteful.