Adjustable Muffler Thunder Muzzle Review | From Quiet to Straight Pipe Instantly

The Glory Days Speed Shop Thunder Muzzle is one of the first dynamic adjustable mufflers on the market that allows you to control sound from stock level quiet to full straight pipe at the turn of a switch, but does it work as well in the real world as it sounds on paper? In this video I put it to the test and give you sound clips of what the exhaust sounds like in each mode. Want to save on your order? Use the Code "JustDiesels" at checkout: https://glorydaysspeedshop.com/JustDi... #dieselexhaust #dieseltrucks #muffler