dual flowmasters

[r1les]

i have an 03 chevy truck 5.3 liter,i cut the y pipe off and went with true dual 2 chamber flowmasters,2.5 inch.with 2 pipes going out the rear.but for some reason its still quiet going down the road?cant really tell its dual exhaust going down the raod.so im looking to make it sound a little beefier.is this the right set-up for this truck?plus im thinking about putting a magna supercharger on it later so i dont know if this exhaust id the right set-up anywas?

[r1les]

plus it has a 6" lift with 35's.its not that torquey when it comes to peeling out in the mud?