i have flowmaster 50 series do yall think i should change it to 40 series..wats yalls advice?
-thanks

 

i just traded my 03 in on an 05. i went back to the 40 series 3" on this new truck and love it....the sound produced from the 40's 3" just can't be beat in my mind.....i used 2 1/2" on the 03 4.6 but the 05 5.4 with 3" is already turning heads and many people asking me what i did to it and have only had it 4 days...i drove off the lot saturday and straight to the shop to have them put on....

havin fun....

khrome

ps...that's dual 3" 40's dumped at the mufflers......not a single....i don't do single period....

 

have had both the 40 and the 50 series the 50 had less drone at highway than the 40 but the 40 had a better sound in my opinion, my tires and the 40 series did battle over who was louder at highway speeds, in my opinion go with the 40 series