Hey guys. I have looked at all the dyno reports and seen the numbers. I have also looked at alot of videos on the net. My question is which replacement muffler is the deepest, The Magnaflow or the Flowmaster? I know the 40 serice is loud but in all the videos it sounds raspy, and poppy, is it in person? I like loud, but I WANT DEEP, like real deep. Thanks for the help guys. I am leaning toward the 40 serice if it is not as raspy and poppy in person.