Flowmaster
Hello I had the super 44 on my 5.4 2005 SI/DO before I went to Magnaflow true dual. It was loud, I also did not have the rear cats on there thanks to DarrenWS6 help and that made a huge sound difference. Nothing bad about Magnaflow but the FlowMaster super44 is a beast with sound. It was aleast mine was louder then dodge
super 44 and make sure they mount it under the bed and not under the cab!! Mine doesnt have hardly any inside noise because of the location of it. My brother in law has a super 44 and he had his mounted under the rear seat and it is petty loud inside the truck.
good advice.
I have a Flowmaster 40 SIDO Catback and it is loud both inside the outside. It is installed under the bed, but is still louder than I want it to be inside the cab. If I had to do all over again, I might have gone with a Magnaflow.
I ran a Flow 40 SI/DO for about 3 1/2 yrs untill it rusted out. Once you got past the snap,crackle and pop start up it sounded real good at idle, loud when you mashed down and had a little aggravating drone in the cab at about 40mph. I replaced it with a Magnaflow 18" SI/DO which does not pop when I start up, idle sound's like a stock muffler but when you hammer down it's almost as loud as the Flow 40, also no aggravating drone in the cab. Just an honest comparison of the two muffler's from someone who's had both.
Performance Peddler has them the cheapest, Summit Racing has them with the best service and fastest ship.
ive got the 40 series si/so on my 4.6, love the sound but seem to have lost some performance with it, anyone else have this problem with flowmasters? You just cant beat the sounds of a flowmaster.
I'd like to hear a video









