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95 percent has to do with the design/layout of the exhaust, the rest lies in the flow of air through the engine and how it is controlled.

ZZmustang

I put Flowmaster 3 chamber with 4 in tips on mine and it sounds good.
And the 4inch tips look better than stock.
Oh, by the way, the series 40,50,60, 70, 80 are the length of the muffler, All but the 40 series come in 2 or 3 chamber, for flowmaster that is.

classj

Without starting a brawl here. And in no way trying to bash SN95 guys.

Personally. I absolutly hated the tinny, hollow sound the SN95 cars made. The carssounded likea tiny small block breathing into atrumpet.

While our engines are still 4.6L, I have recieved nothing but compliments on how my 06 sounds. Andthe exhaust is stock. These cars sound outstanding cranking through the gears at 6500 rpm with a CAI and tune. Someone I know with a GT500 was surprised at how nice the GT sounded. He actually liked the burble of the GT better than the GT500.

I will admit it could be a bit rumblier and louder at idle. Maybe the GTA muffs will find their way under my car after a while. But thathas alot to do with the cams and the fact that it is a few liters short of that big-block sound.

Ford did a great job with the sound on these cars and did more research than any aftermarket company did I am sure.

I have heard 40 series mufflers with an off road H. They were very nice at the side of the road and really mean sounding. But inside the car, not too nice IMO.

bl1nk

I agree with you there... in stock form. But Ive heard Ceekays car from the 4.6 section and it makes you want to cry it sounds so bad ***. Im pretty sure hes got the Bassani O/R setup.

I have LMs and on the way home last night I heard an sn95 OVER my car with my windows closed. It had to be crazy loud to be able to drown my LMs out while my windows were up. I totally agree that most of them sound like crap but every now and then I see one that just sounds awesome as hell.

SALEEN100

yeah the muffler in the back insted of in the middle and then u have all that down pipe on the 01-04 i hate the sound of the new one i miss my 04

Daniel60

I didn't read all the responses but I have to say though I like the way my car sounds I do like the way the 2 valve 4.6 sound better.

nycstang37

simply put its the muffler placement, i heard a guy with an 06 saleen that put original 2 chamber flows on his and it sounds almost like the sn95's i bet my car that if the muffs were placed in front of the axle youw ould get that hallow mettalic sound we all(well most) of us love and picture when we think of a mustangs exhaust

Daniel60