True Duals = True Quiets
True Duals = True Quiets Was running PS Longtubes 3" Summit X open. Was very loud. sounded amazing. But had 0 back pressure, and was a little obnoxious.
Now im running the same setup but with two 2 chamber flowmasters.
Im in love with the exhaust note. However it is entirely too quiet for a car running longtubes and true duals.
How would these compare against single chambers?
And am i losing or canceling out any advantages i would have over running another muffler setup?
Now im running the same setup but with two 2 chamber flowmasters.
Im in love with the exhaust note. However it is entirely too quiet for a car running longtubes and true duals.
How would these compare against single chambers?
And am i losing or canceling out any advantages i would have over running another muffler setup?
TECH Resident
Joined: Dec 2005
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From: In a house
What is this back pressure you speak of 
Anyways food for thought an optimal exhaust over any setup is headers with extensions which is a small section of pipe running off each header with no x over. Your setup would be no different then anyone else who runs an X pipe who claims its the best setup out there, maybe in the case of street use it is but other then that meh mostly just extra weight.
Anyways getting back more on topic flowmasters are not really the best to be using especially a 2 chamber if your looking for loud. Go with some type of bullet muffler on your X.
Anyways food for thought an optimal exhaust over any setup is headers with extensions which is a small section of pipe running off each header with no x over. Your setup would be no different then anyone else who runs an X pipe who claims its the best setup out there, maybe in the case of street use it is but other then that meh mostly just extra weight.
Anyways getting back more on topic flowmasters are not really the best to be using especially a 2 chamber if your looking for loud. Go with some type of bullet muffler on your X.
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I was searching craigslist yesterday and saw your car on there, thought I remembered seeing it somewheres else.
A buddy of mine has ran both the two chamber 40's and the single chambers and the single chambers are definitely louder. I think the two chambers have a better tone but if you still want that flowmaster tone then I would get the single chambers otherwise I would suggest a bullet style muffler.
A buddy of mine has ran both the two chamber 40's and the single chambers and the single chambers are definitely louder. I think the two chambers have a better tone but if you still want that flowmaster tone then I would get the single chambers otherwise I would suggest a bullet style muffler.
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Dynomax bullets, even on a stock LS1 with mids/dump they sound quiet at idle, but bark with authority if you get on it. I don't think I will ever run another muffler unless I have to be very quiet for some reason.
40s have always sounded loud to me. I had 1 chambers and they don't have nearly as good of a tone as the 40s. I think your problem is you need more power. Slide a big cam in there and it'll liven up some.
I would go with one chambers over bullets any day though.
I would go with one chambers over bullets any day though.
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. Anybody have any feedback on these mufflers?
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. Anybody have any feedback on these mufflers?
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
Flowmasters flow fine in their straight through mufflers. The crossflow that goes into the stock location is why flowmasters have such a bad rap around here because that specific muffler doesn't flow as good as others. With mufflers, you have quiet or free-flowing, or somewhere in between. Not both 99.9% of the time. The act of quieting is restrictive by design.
OP, make the switch to single chambers, I think that will do what you want.
OP, make the switch to single chambers, I think that will do what you want.
TECH Enthusiast
Joined: Dec 2009
Posts: 529
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that list has been around a while, seen it on hotrodder.net i think..
theres another list floating around that has the summit branded mufflers on it and they were in 2nd place...
hard to beat a mesh core glasspack for all out flow..
i think the best flowing muffler at the moment is the magnaflow ultraflo.. then the flowmaster delta flo's are good..
theres another list floating around that has the summit branded mufflers on it and they were in 2nd place...
hard to beat a mesh core glasspack for all out flow..
i think the best flowing muffler at the moment is the magnaflow ultraflo.. then the flowmaster delta flo's are good..
