Quietest free flowing Fox Exhaust???

fox racer · Jul 7, 2007

Magna flows... they are QUIET at idle, sound great cruising, and open up at WOT. They pop a little, but that only happens with LTs.

andrewsg · Jul 7, 2007

I know this is strange but I have a total of four mufflers on my car. Two dynomax Bullets, and two Flowmater American Thunder Series. This all comes from a Set of Windsor SR. Heads flowing thru BBK 1 5/8 Long tubes, into a BBK Shorty H Pipe, Into the bullets, into the flowmasters (space of about 12" between the mufflers, from the end of the Bullet to the start of the start.

Reason I dd it this way? I wanted something unique sounding -- the cops around here are bastards about noise, and I had all the parts on hand.

89five.o · Jul 7, 2007

I have the quiet thunders as well and they sound pretty mellow. I am also using the Dr. Gas o/r X pipe which I've heard mellows the exhaust note even more. I'm not sure how it sounds in comparison to a full bassani setup but cruising mine is pretty tame. Here's a walk around clip. Sorry I don't have any cruising or in car clips.

http://media.putfile.com/FRPPheadersdrgaxorxBassanicat

Vinnietbird · Jul 7, 2007

I am using the warlok mufflers.They have built in cutouts for when you need them.I read about them in a Mustang magazine last year.They were doing a compariison of a lot of top quality mufflers for flow and decibal level.The warlocks were the quietest.They flow great.At the track,you remove 3 wing nuts per side and pull the plugs,open exhaust.But until then,the car runs VERY quiet with a nice shallow burble to it with a nice deep tone under acceleration (not the loud tone that leaves yor head pounding).No drone while your out driving (I have 2 1/2 inch exhaust on the car).Something you may wish to check out.They are pretty reasonably priced,and functional.

Daggar · Jul 7, 2007

I'd thought about the Warlock before but would only do something like that if I had the remote valve installed (like someone mentioned earlier in this thread).

I'm an only once in a great while track participant so the goal here is to find a solution that is silent inside the car but also doesn't choke performance. I'm looking into some of the mufflers etc., that have been suggested already. It can be loud as hell outside if it likes... I just want it quiet inside. hehe

strtrcr50 · Jul 7, 2007

No drone at all here.
BBK Shorties, pypes catted x, and violator catback.

Aliate X · Jul 7, 2007

Daggar said:
Please send links when able... Preferably from inside of the car at cruise.

heh youre in luck, I have like a 20 min cruise video I can send it to ya on aim.

88_GT_5_oh · Jul 7, 2007

my super turbos are pretty quiet at idle, then again the turbo muffles alot sound as well

blackened88lx · Jul 7, 2007

25thmustang said:
Hooker Max Flow I believe. They are NOT the Aerochambers, as they are a straight thru muffler, but for some reason were quiet as can be on my dads 91. Like amazing quiet, definately the quietest straight thru muffler, and a good chance it is only louder than a Super Turbo muffler.

It seems like that's what's shown here. They make good power too according to this.

MUFFLER SHOOTOUT:

Results based on 5.0 Mustang Magazine December 2002 issue (page 55). Test car is a ’90 Coupe with 370 HP and 11 second potential. A number of 66 pulls were made to compile this information. Where does your muffler stack up?

The results in HP order:

1.Flowtech Warlock (open) 374.2 hp/ 333.1 tq
2.Bassani Real Street 373.7 hp/ 333.8 tq
3.Hooker Maxflow 373.5 hp/ 333 tq
4.Borla XS 373.3 hp/ 332.6 tq
5.Magnaflow 372.8 / 332.5 tq
6.MAC 372.3 hp / 331.5 tq
7.Flowtech Afterburner 372.3 hp/ 330.1 tq
8.Hooker Aerochamber 372.1 hp/ 330.4 tq
9.Bassani 372 hp/ 333.5 tq
10.Spintech 371.6 hp/ 332.2 tq
11.Edelbrock Performer RPM 370.9 hp / 331.3 tq
12.Borla XR1 370 hp/ 334 tq
13.Flowtech Terminator 369.5 hp / 331.3 tq
14.Dynomax Ultra Flo 369.4 / 333.2 tq
15.Flowmaster 369.4 hp / 331.8 tq
16.Flowtech Warlock 366.3 hp / 325.3 tq
17.No muffs 365.2 hp / 330.1 tq

Sound Off in Quietest to Loudest (Decibels):

1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.
2.Hooker Maxflow, 80db at idle, 90db at 2,000 rpm, 120db at WOT.
3.Magnaflow, 82db at idle, 91 at 2,000 rpm, 114db at WOT.
4.Flowmaster, 82db at idle, 93 at 2,000 rpm, 115db at WOT.
5.Flowtech Warlock, 83db at idle, 92 at 2,000 rpm, 112db at WOT.
6.Dynomax UltraFlo, 83db at idle, 94 at 2,000 rpm, 113db at WOT.
7.Borla XR1, 83db at idle, 96db at 2,000 rpm, 118db at WOT.
8.Bassani Street, 83db at idle, 96db at 2,000 rpm, 120db at WOT.
9.Edelbrock RPM, 84db at idle, 93db at 2,000 rpm, 118db at WOT.
10.Bassani Real Street, 84db at idle, 96db at 2,000 rpm, MAX. (120+db).
11.Flowtech Afterburner, 86db at idle, 94db at 2,000 rpm, 115db at WOT.
12.Flowtech Terminator, 86db at idle, 94db at 2,000 rpm, 119db at WOT.
13.Hooker Aerochamber, 87db at idle, 94db at 2,000 rpm, 114db at WOT.
14.SpinTech, 87db at idle, 97db at 2,000 rpm, 116db at WOT.
15.MAC, 87db at idle, 98db at 2,000 rpm, 119db at WOT.
16.No Muffler, 91db at idle, 103db at 2,000 rpm, MAX. (120+db).

25thmustang · Jul 7, 2007

Yeah like I said, amazed me when we first started it. You can see right thru them and when he cranked it, they were about as loud as super turboes, without the drone and loss of power. They would be my first and maybe only choice on a sleeper!

ryan218 · Jul 7, 2007

strtrcr50 said:
No drone at all here.
BBK Shorties, pypes catted x, and violator catback.

video!

strtrcr50 · Jul 7, 2007

ryan218 said:
video!

Don't have a video camera. maybe i can borrow one tho

ryan218 · Jul 7, 2007

strtrcr50 said:
Don't have a video camera. maybe i can borrow one tho

if you can that would be great..thats the same setup i want to run and woulf like to know it sounds

Merrickd · Jul 8, 2007

Have you thought about insulating the interior? You can find the materials almost any where for cheaper then messing with the exhaust.

85_SS_302_Coupe · Jul 8, 2007

I'm surprised nobody has mentioned Flowmaster 3 chambers....they sound awesome with an X and tail pipes and don't really sound like your typical Flowmaster setup. They're super quiet at cruise speeds too.

blackened88lx · Jul 9, 2007

85_SS_302_Coupe said:
I'm surprised nobody has mentioned Flowmaster 3 chambers....they sound awesome with an X and tail pipes and don't really sound like your typical Flowmaster setup. They're super quiet at cruise speeds too.

This is true haha, that's the exact setup on my car. They're quiet at idle and cruising, but have a little bark when you get on it. They sound much better than any other flowmaster setup imo. I had a tiny bit of drone when it had a catted H, but now with the o/r X there is no drone whatsoever.

SteedaGT9150 · Jul 9, 2007

magnaflow is pretty quiet until 2k or wot

Npower · Jul 9, 2007

I am having a tough time with exhaust too, I have an hp panhard rod the biggest one and there is no way I can get tail pipes so now I have to try to make an exhaust that ends at the axle quite...mission impossible. Since the midpipe on the hp system is 3.5" there is no ground clearence for a big bullet style muffler to add to the two bassani mufflers. I hate the noise but I love the way the car handles.

grey5.0beast · Jul 9, 2007

side exit??

Npower · Jul 9, 2007

grey5.0beast said:
side exit??

I was thinking that but can't find one that will fit with subframes, always too little ground clearence

Quietest free flowing Fox Exhaust???

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