2005Redfire6

Im not sure what brand exhaust it is being it was sent to Mark III from the dealership and they did the exhaust there. On their website they said its call "TurboMaster" exhaust which is something I have never heard of in my life lol.

pthurm_28

flowmaster 40 series delta sound good theirs a clip on the flowmaster website

ODDYSEY

FRPP ! +1

CroDalmatinac

FRPP would be the best, if anything. You really cant make a 4.0 sound great at higher RPM's due to the firing order.

Keep the headers or get JBA shorties.

Stick03

I'm running the full Pypes set up (headers, x-pipe and street pro mufflers.) They sound great, except in the mid range they get a little ricey when you step on it. You definitely get some drone at 65 mph and higher.

I just bought FRPP GTA"s, which will be here any day, and I'll let you know how they sound.

Go on youtube and search "v6 mustang pypes exhaust" or "v6 mustang flowmaster exhaust" etc. It helped me decide.

bronxbomba63

here's a link to a 6 with an H pipe, and MRT's aeroturbine exhaust. Sounds good to me, and I've heard that they are pretty loud in person.
http://www.youtube.com/watch?v=BiyrFrYth4U

Stick03

Just remember...louder ISN'T better, in the 4.0

pthurm_28

Ya it everything

phunnyguy

i went magnaflow duals...

you can see my video of them by clicking on the link

http://www.phunnyguymedia.com

in my signature or above.

bronxbomba63

I agree, the only thing that I'm not sure of, is if it's loud as hell in the car itself, or if there's any drone. I'm getting a pretty schweet setup from a member of another forum...also looking at getting his LT's.