I have an 03 screw with the 5.4 in it i believe i have 4 cats on my truck which sucks a lot because i cant remove any of them because of emissions ... anyway i recently got duals put on the guy did an amazing job looks grea and it was cheap he charged me 270 for everything i'm not to happy with the way it sounds its not really loud so i was thinking about going with something else another shop said a magnaflow would really set it off and that it usually sounds the best on the fords with 4 cats. so please help with any suggestions you may have i was also thinking about going to a cherry bomb extreme but any help will be great and thank you in advance.

 

Bro... Chop off the mufflers all together. The 5.4 sounds great with no muffs and the 4 cats provide enough back-pressure and noise suppression.
But DONT worry they wont be attention drawing loud, just more like... a big ballsie truck

 

he put on dual what? glasspacks? If so, be patient and let them break in. Just like all glasspack, mine were also super quiet when first installed. But now with like 6k miles on them they sound great and will only get louder yet. Same with magnaflow mufflers, they take time to break in.

 

Not loud? Well its because its a magnaflow lol, j/k. Yea, if you can't take off your cats, just get rid of the muffler, sell it, or....just whatever you want, and put true dual straights back from the cats. You'll be happy, and not so loud that it gets ridiculous but a very good sound. What size tips do you have?

 

Unfortunately they have inspections out here and you must run a muffler otherwise I would just try the straight pipe as suggested. I have the magnaflow catback with the 4 catted hpipe on a 5.4, it is not loud but you can hear the engine. My 03 cobra is 5x as loud with after market catted hpipe and magnaflow catback.