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Damon Mertz photo
Malawi, Lilongwe
1 Level
738 Review
60 Karma

Review on 🏎️ High-Performance Race Muffler 854063-12 4.0" In(O)/Out(O) from Flowmaster's 60 Series by Damon Mertz

Revainrating 5 out of 5

Good sound. Not too loud. Low pitched noise when idling.

I bought this hoping it would eliminate the exhaust hum on my LS 6.0 that I had with a Dynomax straight muffler. He saved me from the noise. About the same volume at idle. A little deeper, but much quieter when accelerating and moving. It's enough that I hear all the wind noise in my truck that I didn't hear before because of the exhaust hum.

Pros
  • Stainless steel Material
Cons
  • There are other interesting options.