mbrew2
Well-known member
I know there's been lots of discussion about mufflers on this site but I can't find the answer I'm looking for. I have Flowmaster 40 series on my car 73 vert now and while they sound great, the resonance at highway speed is almost unbearably loud inside the car, no way to carry on a conversation without screaming. Thinking about changing to Magnaflow mufflers but wondering if resonance is still a problem. Their description in summit catalog says no resonance but would like to hear first hand experience.