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Old 10-20-2008, 07:30 PM   #43
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performance benefit?
None. Stock exhausts these days tend to flow quite well. Deal with the other bottlenecks first if you're going for power. Long tubes, HFCs or straight pipes, and then catback. Granted sometimes, like with the GTOs, long tubes and catless midpipes sounded like shit with the stock catback so you pretty much had to get something done to the exhaust.
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Old 10-21-2008, 12:15 AM   #44
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It is my knowledge...and experience...that a freer flowing exhaust most CERTAINLY will give a performance boost. Toss in headers, high flow cats (or none), and pure pipes and that exhaust will give a gain....pretty much over any stock exhaust. SLP Loudmouth and y-pipe. I had it. I used it. I saw the gain. Yes...there was a performance benefit.

There is no doubt in my mind that there will be a benefit from a chambered exhaust.
Wait.....hold on.....
http://www.gmmginc.net/Exhaust/index.php

Did that say "dyno tested...Improved Horsepower?"



More info on Toms stuff... http://www.tomhenryracing.com/toys/ss_camaro.htm
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Old 10-21-2008, 12:26 AM   #45
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I believe that the catback exhaust you would order is put on by the dealer to get around the federal requirement limts. Also I believe that having the the dealership install the exhaust system keeps from voiding the warrenty.
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Old 10-21-2008, 01:16 AM   #46
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id like my camaro to be 100% the best it can be....be it 1% flowmaster 5% brembo 15 % AirPowerSystems....etc etc
Dude I like how you put that in words
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Old 10-21-2008, 01:18 AM   #47
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Dude I like how you put that in words
i do what i can
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Old 10-22-2008, 08:24 PM   #48
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Originally Posted by TAG UR IT View Post
It is my knowledge...and experience...that a freer flowing exhaust most CERTAINLY will give a performance boost. Toss in headers, high flow cats (or none), and pure pipes and that exhaust will give a gain....pretty much over any stock exhaust. SLP Loudmouth and y-pipe. I had it. I used it. I saw the gain. Yes...there was a performance benefit.

There is no doubt in my mind that there will be a benefit from a chambered exhaust.
Wait.....hold on.....
http://www.gmmginc.net/Exhaust/index.php

Did that say "dyno tested...Improved Horsepower?"



More info on Toms stuff... http://www.tomhenryracing.com/toys/ss_camaro.htm

Sorry, but every speed equipment manufacturer is going to say "dyno proven" and what not. Even the Turbonator. I'm just saying that I know a lot of stock catback cars that make big power, most of which being LSx cars. It makes little sense to put a freer flowing catback behind stock cats because the exhaust will only flow as well as the tightest bottleneck, which they are.

More catbacks are disproven than proven on third party dynos.


Granted, I'm talking modern technology. The 4th Gen F-body exhaust was designed 16 years ago, and modified slightly 10 years ago.
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Old 10-22-2008, 08:49 PM   #49
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My desired set-up:

1. Kooks LT headers w/catted x-pipe
2. Corsa cat-back or axle back.
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Old 11-03-2008, 12:03 AM   #50
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No Cats flowmaster where art thou? lol You want to sound better than the other Camaro in your city don't you?
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Old 12-14-2008, 03:08 AM   #51
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If i get one I am going with corsa for sure. They are a little expensive, but you get what you pay for. I looked on youtube at different exhausts on corvettes, mustangs and challengers and corsa always sounded the loudest and meanest and had no drone.
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Old 12-14-2008, 07:47 AM   #52
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FYI...here is a muffler flow/hp test that was done some time ago...it also includes sound level measurements as well.

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

The Hooker Maxflow made the best power while still being very quiet at idle/2000rpm, but nice and loud at WOT. The Bassani Real Street also made nice power without being too loud.

FYI flowmasts I would agree sound pretty nice, but they don't do much for power, and exhaust systems with a better compromise of the 2 exist.
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Old 12-14-2008, 08:22 AM   #53
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What about GMMG chambered exhaust, I know they will be doing something for the 5th gen Camaro right??
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Old 12-14-2008, 10:00 AM   #54
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Yeah the GMPP is offering actually 3 exhaust. 2 for both the ls3/l99 and one for the ls3 in the v8's.
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Old 12-14-2008, 11:13 AM   #55
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Yeah the GMPP is offering actually 3 exhaust. 2 for both the ls3/l99 and one for the ls3 in the v8's.

Do you mean GMMG, and if so where did you hear about that and where can I find more info? If GMMG comes out with a chambered system I know where I'm going!!
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Old 12-14-2008, 04:30 PM   #56
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Quote:
Originally Posted by pharmd View Post
FYI...here is a muffler flow/hp test that was done some time ago...it also includes sound level measurements as well.

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

The Hooker Maxflow made the best power while still being very quiet at idle/2000rpm, but nice and loud at WOT. The Bassani Real Street also made nice power without being too loud.

FYI flowmasts I would agree sound pretty nice, but they don't do much for power, and exhaust systems with a better compromise of the 2 exist.

but that list doesnt really do much when those exhausts are tested on a mustang.
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