Dual Torque
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Cruiser
Joined: Jun 2005
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Dual Torque
Most on this site seem to agree that low end torque is less with duals using straight through slips ons. What happens if you maintain the restrictions in the mufflers by using the SE street performance one piece muffler ( 80490-07/80491-07), with duals, which are EPA compliant but a little louder than stock?
Will you lose any torque and will the slip on's sound much louder?. If anyone is using this combination please let me know your thoughts.
Road Captain
Joined: Feb 2007
Posts: 513
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From:
RE: Dual Torque
Yes, you'll lose torque because you'll lose the scavaging effect of a 2:1 (or a nearly 2:1 with the stock cross-over). The science behind this is way over my head, but it's my understanding that it's not resistance that's good for torque. Rather, an exhaust can be tuned to use theexhaust pulses to create a vacuum that increases flow. I don't know if tuning is even possible with a 2:2 exhaust. I do know that a properly designed 2:1 exhaust system will absolutelykill a 2:2 exhaust system in the low-rpm range. For high-rpm range, you just want max flow. But who cares about high rpm anyway?
True duals will be louder than a 2:1 or crossover. Not sure by how much, but I'd say "noticeable". And it will sound different, too.
True duals will be louder than a 2:1 or crossover. Not sure by how much, but I'd say "noticeable". And it will sound different, too.
Road Warrior
Joined: Feb 2005
Posts: 1,296
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From:
RE: Dual Torque
ORIGINAL: grinner
Yes, you'll lose torque because you'll lose the scavaging effect of a 2:1 (or a nearly 2:1 with the stock cross-over). The science behind this is way over my head, but it's my understanding that it's not resistance that's good for torque. Rather, an exhaust can be tuned to use theexhaust pulses to create a vacuum that increases flow. I don't know if tuning is even possible with a 2:2 exhaust. I do know that a properly designed 2:1 exhaust system will absolutelykill a 2:2 exhaust system in the low-rpm range. For high-rpm range, you just want max flow. But who cares about high rpm anyway?
True duals will be louder than a 2:1 or crossover. Not sure by how much, but I'd say "noticeable". And it will sound different, too.
Yes, you'll lose torque because you'll lose the scavaging effect of a 2:1 (or a nearly 2:1 with the stock cross-over). The science behind this is way over my head, but it's my understanding that it's not resistance that's good for torque. Rather, an exhaust can be tuned to use theexhaust pulses to create a vacuum that increases flow. I don't know if tuning is even possible with a 2:2 exhaust. I do know that a properly designed 2:1 exhaust system will absolutelykill a 2:2 exhaust system in the low-rpm range. For high-rpm range, you just want max flow. But who cares about high rpm anyway?
True duals will be louder than a 2:1 or crossover. Not sure by how much, but I'd say "noticeable". And it will sound different, too.
Road Master
Joined: Sep 2006
Posts: 1,121
Likes: 6
From: Huntersville, NC
RE: Dual Torque
ORIGINAL: Retired_Ted
Excellent comments.
ORIGINAL: grinner
Yes, you'll lose torque because you'll lose the scavaging effect of a 2:1 (or a nearly 2:1 with the stock cross-over). The science behind this is way over my head, but it's my understanding that it's not resistance that's good for torque. Rather, an exhaust can be tuned to use theexhaust pulses to create a vacuum that increases flow. I don't know if tuning is even possible with a 2:2 exhaust. I do know that a properly designed 2:1 exhaust system will absolutelykill a 2:2 exhaust system in the low-rpm range. For high-rpm range, you just want max flow. But who cares about high rpm anyway?
True duals will be louder than a 2:1 or crossover. Not sure by how much, but I'd say "noticeable". And it will sound different, too.
Yes, you'll lose torque because you'll lose the scavaging effect of a 2:1 (or a nearly 2:1 with the stock cross-over). The science behind this is way over my head, but it's my understanding that it's not resistance that's good for torque. Rather, an exhaust can be tuned to use theexhaust pulses to create a vacuum that increases flow. I don't know if tuning is even possible with a 2:2 exhaust. I do know that a properly designed 2:1 exhaust system will absolutelykill a 2:2 exhaust system in the low-rpm range. For high-rpm range, you just want max flow. But who cares about high rpm anyway?
True duals will be louder than a 2:1 or crossover. Not sure by how much, but I'd say "noticeable". And it will sound different, too.
Elite HDF Member
Joined: Mar 2006
Posts: 4,722
Likes: 5
From: Biddeford, Maine
RE: Dual Torque
ORIGINAL: notlost_nc
I'm convinced it performs better....just have to get used to the lopsided look from the rear
I'm convinced it performs better....just have to get used to the lopsided look from the rear
LOL
Steve
Road Captain
Joined: Sep 2007
Posts: 735
Likes: 0
From: australia
RE: Dual Torque
I have a set of Samson crossover duals arriving any day now. I have the SE mufflers p/n 80506-07 and 80507-07 they have the removable baffles.
I will let you know howthe mufflers go with the dual headers.
I will let you know howthe mufflers go with the dual headers.
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