Supercharged Guys/Gals:What mufflers you runnin??

I'm runnin 2 1/2 flowmasters atm,but have read when using a blower set-up or for that matter a turbo set-up,that a chambered muffler is not the best to run.

I've read the reasoning somewhere but cannot find the post/article on this matter.

Am seriously thinkin about runnin the dynomax ultraflow muffler,cuz the flowmaster mufflers aren't all they cracked up to be..