2.5" 63mm Electric Exhaust Valve Catback Cutout Downpipe System kit Remote E-Cut2. 5" Electric Exhaust Valve Catback Downpipe Systems Kit Remote Intelligent E Cut Introduction This Electric Exhaust Cutout System is specifically designed and made to enhance the performance, sound, and power of vehicles with the flip of the toggle switch. Instantly increases up to 20+ Horsepower. Designed to be conveniently welded onto anywhere from the cutout location from the header to the catback of vehicles. Electrical appliance allows opening