It was the best of sounds . . . it was the worst of sounds (Coyote V8 content)

If the vehicle will idle below 1600 rpm, Flowmasters sound like ass.  Period.  Any number of cylinders. 

What! That's about the only time Flowmasters sound good, at idle! I loved the sound of my 289 with 40s when it was idling.

Streetwiseguy said:

If the vehicle will idle below 1600 rpm, Flowmasters sound like ass.  Period.  Any number of cylinders. 

Also they sound like ass when driving down the road.  Kind of a strangled gargle.

APEowner said:

One is that while there is usually some common ground peoples opinions differ on what's a good sounding exhaust.  I, for example, have never heard an inline 4 that I thought sounded good.  I just don't care for them.

Oh, IMO the best exhaust is as quiet as possible, so you can hear the intake noises.  If the exhaust is audible, it is already too loud.

This is why turbo cars usually sound awful, too.  No intake noises.