New Muffler Time!! SLP Loudmouth vs Bullets vs 1 chamber flows

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).

Just a little info for you. The warlocks made the most power and I am assuming the db #s are capped because they are ****loads louder than flows when they are uncapped. They are loud!:spot:
 
I got sick of how the flowmasters sounded, and bearly being able to hear them. Im alittle biased to my bullets :), but they are MUCH louder at cruising whitch I really wanted, when you rip on it they are ear piercing, and they are faily quiet at idle, alittle louder then flows at idle. They are ALOT deeper then flowmasters but still have that 5.0 sound, and SCREAM like a nascar up top.
 
i will be buying another set of magnaflows again if i ever buy an exaust system again. i like the way they sound and i like that they dont drone. i have a catted h so its not too loud but when its not catted its nice but i wasnt looking to make it loud i just wanted to pass inspection.

the only downfall i noticed was they were just too nice to have underneath a car.
 
Better flowing heads will make the car sound louder and better...plus they will actually make the car faster. Other than that...Mac LT's, Mac H to 2 chamber flows and I couldn't be happier.
 
ever seen those s mufflers summit has.....the are from CAR CHEMISTRY, INC.

part number : CCI-IM50A25 99$ each..

i want to try these..they r straight threw and take way less space and are supposed to be really loud...

anyone ever tried these??

:SNSign:
 
either flowmaster outlaw series mufflers (straight through) or dynomax race bullets which i have on my car. I took off my custom H pipe, and have the bullets right after my cutouts and headers, wow, its much louder, I hope you have some motor work done if you want it loud, otherwise it'll sound like crap. Can't wait to put tails on my car again, but with the bullets this time :)
 
ExplodingGopher said:
either flowmaster outlaw series mufflers (straight through) or dynomax race bullets which i have on my car. I took off my custom H pipe, and have the bullets right after my cutouts and headers, wow, its much louder, I hope you have some motor work done if you want it loud, otherwise it'll sound like crap. Can't wait to put tails on my car again, but with the bullets this time :)

I havent seen the outlaw mufflers under 3". And my car dosent sound like crap, honestly sounds like a race car. and is very loud, sounds nothing like your 460 of course but it sounds good, especially with the intake and cam, cant wait till the heads go in and hear it.
 
haha sweet jesus lord. That cars idle has the same tone as mine, of course mine dosent have that big of a cam lol so it dosent chop like that, and when he revved it up my car has that same ear pierecing rasp, but that sound has so much volume, my car has that overwelcoming type sound but i dont know how to describe the difference. Cubes is all you can say haha. Ill never forget the day I heard a 427 shelby with an exhaust for the first time, the tone has so much depth. Its insane. Ill try and get another video of my car with the intake on now, before my car used to sound like another 5.0, hanging rpms, not too cammy like. Even though im having problems with the intake, when you let off the gas, the rpms just drop, no more hanging rpms and its alot louder, cam is ALOT more noticeable, before people would just look at my car as a mustang with an exhaust, I drove through a plaza parking lot today and i had a hot ass chick yell DO A BURNOUT, and everyone there was looking at my car, even 50 yo moms, not cause they thought it was "badass" but just to see what was coming and know if they should run or not. And at a light, i was giving my car alittle rev to make sure everything sounded good, and i see the car in front of me, a little girl flips her head around as fast as she can with the most terrified look on her face, i was just thinking "sorry!"