Review on Thrush 🔊 24242 Performance Exhaust Muffler by Jamil Fog

Replaced my stock 30lb muffler with this 5lb boost and short boost range in place of the top end exhaust on my Chevy truck. Improved mileage and performance. I can even tell when the engine management system kicks in and the engine goes to four cylinders as there is now a difference in the exhaust note.