SMO — Preliminary results of a test measuring the sound reduction capacity of a muffler on a small airplane are in, and it looks like residents near Santa Monica Airport may have gotten an early ...

There's so much data here, we simply don't have room to dissect it all, but you have it now, so you can choose the mufflers you are interested in and run the numbers through Excel if you are really ...

The main thing that separates hot street cars from race cars is mufflers. Heck, you've got blowers, injectors, roller cams, ported heads, and anything else you can name on street cars these days.