If you want to get sciencey
wilhelmraceworks.com
I have a 3" single shot exhaust on my supercharged 3800 4th gen and it was really droney. Full exhaust out the back. I put a resonator on right after the muffler under the fuel tank and right before the bumper. It helped a lot.
Ideally where the cats are helps the most from what I understand but I think they put them factory under the trunk because A. cats help B. the mufflers are good from the factory C. there really isn't many other places to put them.
Drone Reduction - Wilhelm Raceworks, LLC
Adding a Helmholtz resonator to my center exit exhaust for done reduction. Calculator to design a Helmholtz to solve your own drone problem.
wilhelmraceworks.com
How to build an exhaust resonator tube to eliminate drone - PerformanceTrucks.net Forums
GM Engine & Exhaust Performance - How to build an exhaust resonator tube to eliminate drone - The concept behind drone is pretty simple; nearly everything has a resonant frequency...exhaust systems, electronic RLC circuits, even gravitation has resonance. At peak resonance, the amplitude of the...
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I have a 3" single shot exhaust on my supercharged 3800 4th gen and it was really droney. Full exhaust out the back. I put a resonator on right after the muffler under the fuel tank and right before the bumper. It helped a lot.
Ideally where the cats are helps the most from what I understand but I think they put them factory under the trunk because A. cats help B. the mufflers are good from the factory C. there really isn't many other places to put them.
