i havent noticed a wind sound with my pro muffler. but over a flowmaster 40 and a cherry bomb pro. i dont see hardly any difference. i replaced my 40 with the pro and i couldnt tell the difference. but now i hear it. alot louder and no drone.

 

i have to disagree and say that the extreme is quite loud.. just give it some time to break-in, you might change your mind..

 

i have duals on my 92 5.0 with cherry bombs and mine sounds really good

 

maybe its cause ive only heard it from in the cab, i think ill have one of my friends drive it down the road so i can hear it from outside the cab

 

It's a characteristic of straight through design mufflers with fiberglass or other synthetic material packed into them to chamber the sound rather than using chambers or baffles. There's a little excess material in there that gets blown out in the first couple hundred miles you drive it with the new muffler on and as this happens the decibel level will increase.

 

All mufflers break in, not just the ones with glass packing, which the Extreme doesn't even have.

http://www.cherrybomb.com/extreme-mufflers.html

 

Well i love my magna flow.. helped in gas sounds great and love my 3.5in tips...

 

well ive put close to 500miles on my truck since ive had the cherry bomb and i have to say i was wrong, i notice its deeper and loud then wat it was when i got it

 

give it alittle time and mileage. if your not satisfied with the results after driving with it. get a y-pipe and run straights or true duals with si/so extremes. since the extreme is pretty much a flowmaster 10 anyway lol

 

ya just cut everything out and tell the muffler guy to run true dual straight pipes. it will be loud enough. i have it on my 98 with a 4.6. heres a pic sorry i dont know how to downsize it

 

But if there is nothing but tack welded metal baffles in there, I am not sure I totally understand what material inside the muffler is getting 'broken in.'

 

my flowmaster super44 keeps getting louder. i have about 3k on it now and it sa lot louder then when i first put it on.

 

Ever notice that the outside housing changes colors after it has been ran for awhile? That is the steel changing tempers, the more it heats up and cools down the harder it gets, and the louder the sound.