Loudest chambered muffler?

ACSPONY

20+ Year Stangneter :roc</strong><span class=
Oct 10, 2004
711
2
19
Ohio
I've always liked the sound of flows but I'm looking for something louder. I have to take the car in for emissions each year and I'm almost tempted to buy an o/r mid pipe or prochamber but I figure I could swap out the mufflers first before having to install/uninstall the midpipe for emissions testing. I've heard good things about spintech and flowtech? Anyone switched to these from flowmasters? I checked spintech's site and the systems are damn expensive, I guess they're not just cat-backs, they include the midpipe as well? I'm looking for volume to set off car alarms and wake the dead, ideas? I saw the exhaust thread from the other day but would really like to hear from people that have switched from flows if possible. But of course, all opinions are welcome...
Thanks:nice:
 
Someone posted a list on here the other day that showed what the noise level was of about 20 different systems and I think MAC was number 1 or 2 on the list. I haven't personally heard them on a car with cats, but without cats they are loud as hell and they don't have a rasp to them either.
 
Ask and you shall receive.......I believe this is the chart you were talking about....

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).
 
I had Flowmasters, had Macs, and now have Spintechs...

I would say at idle the Flows and Macs are close, the Spintechs maybe a little quieter. At cruising speed they are all very similar in sound Db, with the Flows having that signature sound, the Macs being raspier and louder, and the Spintechs having a really hollow tone to them. Up top it might be my new midpipe but the Spintechs scream. To me they seem louder then both the Mac and the Flows I had previousely.