Review on 🔸 PQY Universal 3" Electric Exhaust Cutout: Remote Controlled Motor E-cut Valve Kit with Dual Flaps for Optimal Performance by Gary Knop

A smoke test showed how badly the original valve stem was leaking. That's probably why they covered him up. Basically, the shaft that opens and closes the internal valves is poorly isolated from the engine and there will be a massive exhaust leak. On the bright side. This is one of the few relief valves that actually uses valves on both tubes. So it opens one and actually closes the other.