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blue2000s · 10-22-2011, 03:03 PM

Basically, the car is a big speaker and if it's vibrated at the right frequency, you get booming. The pulses of air moving in and through the muffler are at the right frequency and amplitude to excite the entire car.

10-22-2011, 03:03 PM	#11
blue2000s Porscheectomy Join Date: Mar 2006 Location: Seattle Area Posts: 3,011	Basically, the car is a big speaker and if it's vibrated at the right frequency, you get booming. The pulses of air moving in and through the muffler are at the right frequency and amplitude to excite the entire car.