: Huge muffler comparison



FAST LS1
01-08-04, 09:53 PM
I've been researching what kind of mufflers I'm going to buy for my Firebird Formula and I found some of your personal reviews of muffler's on the main site. I thought some of you might like to see these 2 comparisons when you try to decide what mufflers to buy.

*******************
All tests via an independent lab
All tests @ 15 wc

2 Straight Pipe 283 CFM
2 Straight Pipe 365 CFM
2 Straight Pipe 521 CFM

2 Typical Bent tailpipe 268 CFM
2 Typical Bent Tailpipe 417 CFM

2 Inlet/Outlet_ Glass Pack Tips- No Louvers- Smooth 274 CFM
2 Inlet/Outlet- Glass Pack Tips-Louvered 133 CFM
Same as above set for reverse flow 141 CFM
2 Cherry Bomb 239 CFM
2 Cherry Bomb 294 CFM

2 Inlet/Outlet Dynomax Super Turbo 278 CFM
2 Inlet/Outlet Ultraflow Bullet 512 CFM
2 Inlet/Outlet Gibson Superflow 267 CFM
2 Inlet/Outlet Flowmaster ( 2 Chamber) 249 CFM
2 Inlet Outlet Flowmaster ( 3 Chamber) 229 CFM
2 Inlet/Outlet Thrush CVX 260 CFM
2 Inlet/Outlet Maremount Cherry Bomb 298 CFM
2 Inlet/Outlet Hooker Aero Chamber 324 CFM
2 Inlet/Outlet Hooker Max Flow 521 CFM
2 Inlet/Outlet Borla Turbo 373 CFM
2 1/2" Inlet/Outlet Magnaflow 284 CFM

Standard OEM 2 Inlet/Outlet 138-152 CFM
Standard OEM 2 Inlet/Outlet 161-197 CFM
**************
This next comparison I found on a mustang forum.
*************
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).
http://forums.stangnet.com/archive/index.php/t-392314
******************

ShadowLvr400
01-09-04, 08:43 AM
I feel almost insulted... No Ravin mufflers up there. Midas

philthy
01-30-04, 07:09 PM
I have 3" Flowtech Warlocks on my '69 Chevelle. Lots of compliments on the sound and people are impressed with how easy it is to uncork the exhaust. The power increase from cheapo "turbo" mufflers was incredible.