Advice on True Duals
Some pics of my setup. I am very happy with my true duals. Sounds a 100 times better than any catback, very mellow at light throttle, very little interior resonance at all (mainly only in 6th gear at about 1200 rpms), and sound muscular and screams at 3000 rpms and up. My ground clearance is better or equal to any y pipe setup. I had my duals fabbed up by a local exhaust shop. I used 4" round body magnaflows and a magnaflow tru-x crossover pipe. It is 2.5" all the way back. Hope that helps.
11 Second Club
Joined: Feb 2003
Posts: 5,524
Likes: 1
From: The South
Originally Posted by SouthFL.02.SS
From the archives.... pretty neat info for picking out mufflers for TD's...
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).
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).
Interesting point is that no mufflers produced by far the least horsepower of the bunch.
What on that list most closely resemebles dynomax bullets?
Originally Posted by DWillTA
Some pics of my setup. I am very happy with my true duals. Sounds a 100 times better than any catback, very mellow at light throttle, very little interior resonance at all (mainly only in 6th gear at about 1200 rpms), and sound muscular and screams at 3000 rpms and up. My ground clearance is better or equal to any y pipe setup. I had my duals fabbed up by a local exhaust shop. I used 4" round body magnaflows and a magnaflow tru-x crossover pipe. It is 2.5" all the way back. Hope that helps.
That is a very nice looking setup. Did you have to bring any parts to the shop or do they do all the ordering and fabrication on site? What was your final cost, with and without your headers?
Originally Posted by Mike K.
if you plan on taking girls out, don't get the duals, just get a nice y and an elec cutout,
unless you plan on getting dual all the way out the back its gonna be loud as hell.
unless you plan on getting dual all the way out the back its gonna be loud as hell.
I want the duals out the back with a quality set of mufflers both for looks and for auditory issues. If anyone is running a nice quiet setup, let me know of your muffler brand and any possible links to a sound clip.
12 Second Club
Joined: Mar 2005
Posts: 33
Likes: 0
From: Orlando, FL
I have flowtech LT adn had a local shop fab a x-pipe and 3" pipe all the way to the back and bullet mufflers. Except I went under the axle. NO clearance problems. Sounds awesome, but couldn't imagine how loud with dumps.
Originally Posted by DWillTA
Some pics of my setup. I am very happy with my true duals. Sounds a 100 times better than any catback, very mellow at light throttle, very little interior resonance at all (mainly only in 6th gear at about 1200 rpms), and sound muscular and screams at 3000 rpms and up. My ground clearance is better or equal to any y pipe setup. I had my duals fabbed up by a local exhaust shop. I used 4" round body magnaflows and a magnaflow tru-x crossover pipe. It is 2.5" all the way back. Hope that helps.
Originally Posted by DWillTA
Some pics of my setup. I am very happy with my true duals. Sounds a 100 times better than any catback, very mellow at light throttle, very little interior resonance at all (mainly only in 6th gear at about 1200 rpms), and sound muscular and screams at 3000 rpms and up. My ground clearance is better or equal to any y pipe setup. I had my duals fabbed up by a local exhaust shop. I used 4" round body magnaflows and a magnaflow tru-x crossover pipe. It is 2.5" all the way back. Hope that helps.
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Verdad Gallardo The shop is a magnaflow dealer so I purchased all the pipes from them. Cost was around $700, I think, for headers back including tips. I installed Pacesetters race style, coated. So for the complete exhaust I have about $1200.
I had the collectors welded because I was having alot of problems with leaks at the collector. The pipe is slid into the header and a simple chain style pipe cutter could be used to cut the weld and the pipe slides out. There is plenty of room to remove the tranny with the exhaust intact. There is no rattles at all. I am 100% satisfied.
I had the collectors welded because I was having alot of problems with leaks at the collector. The pipe is slid into the header and a simple chain style pipe cutter could be used to cut the weld and the pipe slides out. There is plenty of room to remove the tranny with the exhaust intact. There is no rattles at all. I am 100% satisfied.