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Review on πŸš— Enhance Your Vehicle's Performance with Flowmaster 953047 Super 40 Series Muffler - 3" Inlet (C), 3" Outlet (O) by Marcus Merritt

Revainrating 5 out of 5

Flowmaster for Sierra 1500 2013

Literally the best modification I've made to my truck is this muffler. My truck has small mods like Airiad modular intake and Hypertech programmer but this muffler is deep and not too loud. that just sounds great. stock tubes. everything left as is. I just cut out the normal one and weld this one. couldn't have had a big smile when he first started the lift. :DUPDATE: Once everything is nice and hot, the idle rumble becomes incredibly deep and steady. It just sounds so good that when I go outside I start the truck just to hear it. Cold start is the best thing I've ever heard on a vehicle. I can't tell you how good my truck sounds now!

Pros
  • Deep aggressive sound Exhaust Note
Cons
  • Big and bulky