The walker dynomax mufflers perform as well or better than flowmasters, but are quieter. The flows give a large rumble and pop with the mildest engines. Dynomax units are quieter, but still give a nice sound at cruise or accel. The ones on my '67 LeMans replicate the old-school musclecar sound. And they're a little cheaper than flows too.

The flows are a chambered muffler, the dynomax are a baffled design with packing.


Preaching the Hot Rod Gospel according to the 4-stroke apostles:

Suck, Squish, Fire and Fumes