I did'nt see Magnaflow on that chart,for my money they're the best out there..i had dynomax ultraflos on my previous duster a great sounding muffler,but not quite as good as the Magnaflows...flowmasters or (crap masters) as we call them sound the same on everything lousey,you can always tell when something is coming down the road with flowmasters on it no matter what they're on....